Info

Put your money in a wood turning lathe until you have everything else you ever expect to need. The tools for metal work of the amateur or the professional gunsmith are far greater in number than the woodworking tools. After the vise and the files, the most important are perhaps the SCREWDRIVERS. I doubt if any tool is more often abused, Dr more grossly misunderstood than the humble screwdriver. The average man tries to get along with one or two, when he needs a dozen. Gun screws are often set...

Hcv

The color is generally darker and richer and by careful selection the most beautiful stocks can be procured at a fraction of the cost of imported wood of equal grade. In some of the southern states, particularly Texas, the walnut produced is very close grained with fine pores and is marked with long dark streaks not unlike Circassian walnut. I have known of this wood being sold as Circassian in more than one instance. It has, however, more of a reddish cast and is softer,...

Mkp

Tewe bvi vg btrnU < ij< xlwit br *< ii I pUjs .v < V m.t> trj. of barrel lug, and if this fails to get results, use the method illustrated in sketch above. First turn up a couple of steel plugs to a tight push fit (but not a driving fit) in the chambers. These are to prevent mashing the barrels out of round. Now set the barrels in vise as shown, with jaws protected by sheet brass, and set the vise up carefully, a little at a time, until the notch in lug is sprung upward sufficiently...

Nzl

Shows an arc welder at work and illustrates the operation clearly. As for acetylene welding, the edges must be widely scarfed, and the welder touches the work with the welding rod at short intervals, forming an arc which deposits the molten metal each time it is lifted. The illustration below shows a piece that has been arc welded, before the excess metal has been dressed off. When sending work out, the welder should always be instructed to not dip the job to cool it after welding. Let it cool...

A tieMME

V 0M fioUKZi EP No. 5 ANTI PERSONNEL MINE. DETONATOR exploder, open end first and smear with Weight of mine 8 oz. Explosive fil- Place the exploder in the prepared ling Gelignite or TNT. Main filling 1 1 2 hole and pack earth around the sides oz. CB and a five oz. layer of TNT. with earth to support it, leaving the Arming. Prepare hole and examine top clear. Insert the selected plunger, plunger for fit in cannister. If OK, complete with prongs gently into grease. Insert...

Actions

TN the remodeling of old guns, as well as in the manufacture of new ones, the polishing of the metal parts prior to bluing or case-hardening is one of the most important phases of the work. On this white finish depends the final appearance of the weapon. Amateur workmen seem to have the opinion that the bluing or hardening will cover up scratches or spots in the steel, while just the opposite is true. Any marks which show before bluing or hardening will show still plainer in the finished job....

Aluminum Antitank Mine

This mine, which was made from salvaged material by the Germans in Tunisia, has not been found outside that area. It consists of a cylindrical aluminum container with a false lid and cover. The loose lid has three holes through which the igniters protrude. These are caused to function by pressure on the cover. Three igniters per mine are used and they may be either of the D.Z. 35 type or the other type used in the Tel-lermine T.Mi. 42 (T.Mi. Z. 42). (a) Using the D.Z. 35 igniters, screw into...

And Approach

(b) FUt or rolling terrain Is dealreblei howaefr, ia mouatalneua er UDj country. m tec ted at higher aleralions awe h u level platease cu be (c> Small alley or pockets completely eurrounded by hllle are difficult to locate and ahould act acrmally be used. (d) n order to a ord the aireupporl usit flexibility In electing the IP, It la desirable ihrni the aircraft be able to approach the Arget site from any (e) There should be an opea approach quadrant of at least SO to alio* the aircrew choice...

Assemly

Tie the break curd to the static line, uair.g a square knot. Fold the static line and set it asids for the moment. b. Pull the neck drawstring tight, making the neck vent as small as possible. Slide the fiber keeper down to the vent to keep it small. This is now the apex of the parachute. c. Tie the free end of the tatic line securely to the poncho's neck drawstring (Figure I). d. Suspension lines are next. If you use rope, tie one end of each tent rope to each grommet (metallic eyelet) of...

Automatic Rifle

LANDING ZONE ASSEMBLY - Personne. being transported in air craft tend to become disoriented. If for any reason the aircraft is unable to lard in the objective ares cn ths heading as given in the briefing prior lo the conduct of the airmobile operation, seme method should be announced that would give the passengers hs heading of the aircraft upon landing. The crew chief of the aircraft can draw a sketch (acetate board can be used) of the objective and designate the heading of the aircraft upon...

Avk

A No crimp, as on National Match ammunition. B Ring crimp, as on Cal. .30 Ml. C 3 point crimp, as on .50 Cat. ammunition and many foreign cartridges. than military calibers is sometimes encountered with the primer crimped in also, so a litde extra power or leverage in the reloading cool is not out of place at all on this operation. The need for removing the crimp from the primer pockets of cartridge cases only exists where the primers have been crimped in and the...

Opj

While this is not a common accident, it has nevertheless occurred in shops which should have known better. When trying the screw in the scope block, note whether it begins to tighten up before the head is down tight in the countersink. If so, withdraw screw and carefully grind off a little from the point. To get the full holding power of the screw the end should not touch the bottom of the hole. After the hole is drilled comes the tapping. Naio be care fall The tap is tapered...

Szt

Insert the screw through hole in sight base, turn it into the hole in barrel, and with a small file mark the screw level with bottom of dovetail. Remove crew, cut it to length, slot for screwdriver and turn into place. Drive in the sight, and thar she be. It is permissible to make the base portion of band a trifle narrower than the base of the sight itself, so that the latter can be moved slightly right or left to zero it, without the difference being too...

Broken

External charge. Piourb 105. How to blow round timber. bers, etc., are placed around one side of the object (fig. 105). The chargc should not extend more than halfway around the object being cut. External charges for cutting square timber members are placed on one face along the line of the desired cut. In the case of rectangular timbers not having a square cross section, the charge is placed on one of the faces having the longer dimension. For example, to cut 10-by...

Built Of Compacted Soil Or Select Material Surface Of Shoulder Sodded Or Surface Treated

Runway pavement nomimelRt.nT quires a great deal of time and labor, the Army has looked lor ways of constructing a field quickly. For this purpose we have developed prefabricated steel landing mats of various kinds, which can be laid down quickly with a minimum of tools and equipment. It is Important that every engineer know the essentials of laying down these steel runways. Figures 136 to 142, inclusive, show this kind of runway and the means of making connections among the various...

By Townsewd Whelen

Striking and Polishing Barrels 264 19. Engraving and Ornamentation of Metal 275 20. Bluing and Browning 21. Annealing, Hardening and Tempering 302 22. Case Hardening 23. Soldering, Brazing and 24. Manufacture or Substitution op Small Parts 343 25. Hard Fitting of Small 26. Cleaning Bores and Removing Obstructions 382 27. Lapping Barrels and Borb Polishing 389 28. Adjusting Trigger Pulls and Actions 397 29. Fitting Sichts and 30. Remodeling Military and Obsolhte Rifles 437 31. SHorcuN...

Usl

Sm m Lud I 240 HO 1080 1SOO 27 0 3740 6240 One way to prevent rust and mildew on equipment in storage Ls to line storage cabinets with aluminum foil and hang a 100-watt bulb in the cabinet. 4. A knot car. reduce rope strength a much aa 30 . Sharp bend around corners can halve the strength, and exposure and heat can rcduce rope strength by aa inuch as 0 . _ 1. Since the audio caps far your receiver-transmitters are a little tricky to put on, put a small dab of white paint on the connector and...

Caps

PxrcrRE 103- -Bore hale loaded to blow crater. distance between successive charges being not greater than twice the thickness of the structure. c. Steel. The effects of an explosion are very localized in steel. Only that portion of steel which Is in close contact with the explosive charge is cut. A concentrated charge placed on a steel plate will simply blow a hole in the plate or dent it directly under the charge. Therefore, If It Is desired to cut a steel plate, the explosive charge must be...

Cc

II AERIAL PHOTOS (CONTINUED) 4. Nvntwr ich c nler IJc 30 tod flf n un*rlc l Ju U th otb r Un , lncre aln( ngfit tod up. 5. K ad coordinitct t ay oth r. TABLE HR. III LOVO RANGE PHOTOGRAPHY (SS-mm C m r It Rlflooiur F top M 11 I I 3C biaoniUre F 10 U IT T X 5C bloocujax* F I SpMd - A r qulMxl by Dim AiA fUnye IftfloJty Sight tfcrougb rlcfct yepiece od dliut to focv . Set bi o< raJ r to o xo r Place left xraocU (with reticle) fluib rtlh c r I . T u picture wttho-r. tnoTlaf either...

Chambering And Barrel Work

RT,HE MEASURING OF BORES The Ordnance Depart-ment takes the measurements of the bores of Springfield and Krag rifles with an instrument called a Star Gauge. This i a long steel rod, bored out to contain another rod inside it. One end of the smaller rod contains studded projections which fit tightly into the grooves, expanding to fit the bottom of the grooves when the smaller rod is pushed into the larger rod, and a scale on the breech end of the rod gives the groove and land diameters. The...

Chapter Air Operations

L Preplanned Air Resupply Operations V. Reception Committees VL Landing Zones < Land) VIL Reporting Landing Zones VOL Landing Zone for Rotary Wing Aircraft DC Landing Zones (Water) Table Fixed and Rotary Wir.f Aircraft Capabilities CHAPTER fl. WEAPONS. U.S. Rifle CaL SO M-l AR-15 (M-16) Rifle .223 Carbine, Cal 30. Ml 6 M2 Pistol Cal .45, M1911 and M1911A1 Thompson 9ubmachlne < Xm, MlAi Cal .4 Submachine Oun, M-3 Browning Automate Rifle M1918 Ai Browning Machine Oun Cal .30 M1919A4 Browning...

Characteristics

3> * Shaped charge (HEAT) . ------------------------------ Black or olive- Maximum diameter_____________------------ j Length ------------------------------- a75 ia Total weight--------------------------- Approx LS lb Filler Fuxe delay----------------------------- T me of fljfhl

Charge

Lmproviaed Ammonium Nitrate Satchel Charge. While the cratering charge referred to earlier la undeniably a good one. It is really only suitable for cratering use. A more manageable charge can be produced from AN, using wax as the second Ingredient, rsther than oil. The procedure for mailing this charge Is merely to melt ordinary pare In and atir is AN pellets, insuring that the wax is thoroughly mixed with the AN white still hot. Before the mixture hardens add s one-half pDund block of TNT....

Checking Triggers And Other Metal Parts

Triggers, back straps of revolvers, hammers, etc., are often improved by checking to prevent slipping. The principal difficulty encountered in checking steel with the file is that of spacing the lines evenly. One cannot use a checking spacer, since the single light scratch would not guide the tool properly the checking must be filed in, and about the only way to space it evenly is to gauge it by eye. This is not nearly so difficult as it sounds. Use a 3-square escapement file or a 6 inch needle...

Ciiu Mine

This mine is a dovetailed wooden box with a hinged lid, it contains a single block charge of 20.0 grams of explosive. It is operated by a 22.42 igniLer. The igniter screws into the block charge and is inserted through a hole in the side of the box. The striker and the actuating-pin holding the striker pro- trudes through the hole in such a way that the recessed lid can bear on the actuating-pin. Pressure on the lid may then push out the pin and operate the mine. (a) Unscrew protecting cap from...

Closing Cap Top Of Striker

Abatis constructed of interlaced trees in defile. stopping or bellying up a sank. (See fig. 110.) d. Abatis. A road block made with fallen trees can stop a tank ior a time, if the trees are b g enough. < See fig. 111.) Figure 111. Abatis constructed of interlaced trees in defile. Hasty mine ileld. Fwjrs 108. Mine-field patterns. 61. Obstacles. a. Mine fields. Mine fields are laid definite patterns, two of *which are shown in figure 108. Patterns are designed to do two things (1)...

Container

Attach a uitnUe length ot pjll or trip wire to the pull ring of the grenade. Lead pull wire to point selected for activation (at least 25 m lera from the device when normally operated). g. Press the tips of the grenade* cottcr pin together so that it can be released easily. 3. EFFECTS. When ignited, th s particular Husch flare burns for approximately VO minute*, illuminating an area up to S3 meters in d ametcr. Exploding Flam* Device with M4 Burster (Figure 5 1. DESCRIPTION. This -is a...

Contents

The Gun-Crank's 3. Tooling Up 4. Special and Home Made Tools and Equipment 33 5. ' Materials and Metals 6. First Steps for 7. General Shop Practice and Use of Tools 64 8. Wood for Gunstocks 9. Gunstock Desicn 10. Stockmaiung Laying Out and Inlbtting 129 1 (. Stockmaking Shapinc and Fitting 147 12. Checking and 13. Finishing and Polishing Stocks 185 14. Repairing and Remodeling 15. Rifle Barrbl Design and

Cverhand Knot

Fioum .-Ammonium nitrate cratering charge with electric-cap 1. Make one-half of clove hitch. 2. Take one complete turn around block. 3. Moke second hali ol clove hitch. 4. Pull cord tight, pushing strands together. 5. Cord should fit snugly against block and three complete loops around block should be in contact as much aa posalblr. Fioort 03. Fastening detonating cord to TNT block. 101 and 102 show how to make splices with electric wires. b. Testing a circuit. (1> To test a circuit use a...

Cx

C. ln he absence of toilet paper, use leaves and grasses. Be careful to examine the leaves and grasses for Insects. I's no leaves that hare any fussy or hairy surfaces or are taken .'rem a tree or plant with milky aap, or grass TABLE NR. t CQKVPlflOW TABLE WPQHTfl AND MEASURES (CONTINUED) thai ha a aarrated edge. Do not use material that is laying on the ground. d. Leeches and tlcics can be partially avoided by tvtng cuffs of your Jacket at the wrist and the bottoms of ouserleg* outside the...

D

(10) Rehearsal* and Inspections. < U> Debriefing. 4. ADMINISTRATIOh ND LOGISTICS e. Uniform and equipment (Statewhich member will cafry and uiq) d. Method of handling wounded and prisoners. 5. COMMAND AND SIGNAL a. Si pud. (1) Signals to be used within the patrol. (I) CommunloaUomwith higher hoadquarters radio csll signs, prima-Matters concerning supply, transportation, serrlce,labor, medical eraeu- jj alternate frequencies, times to report and special code to be used, lion and...

Uvo

The bolt handle should turn down on this gage with just in operating the rifle and having the cartridges insert easily in rapid a slight suspicion of feel, but not so hard as to cause any difficulty fire. At the same time the bolt should not close down completely on the NO GO gage. Figure 115 shows the two headspace gages, GO and NO GO for the Springfield rifle. The minimum headspace gage for the .30-06 rifle and cartridge is known at the 1.940 gage, that being its length from a...

Dc

Accommodate the troops QL LEGAL STATUS OF GUERRILLA a. Be commanded by a person responsible for hie subordinates. b. Have a fixed distiacUve lnalgnla recognizable at a distance. d. Conduct operations In accordance with the lava and customs of war. IV. FOR SUCCESSFUL EMPLOYMENT OF GUERRILLA WARFARE a. The eplrit of resistanca must be present in a segment of the population. b. The guerrillas must have the support of Um civilian populace. 0. The guerrilla movement...

Dcb

Completion of administrative records. 4. Settlement of pay, allowaacea. aad benefita. 9. Provisions of rehabilitation and employment of dlacharge gjerrtllae. VL GUIDE TO ASSESSMENT OF THE AREA 3. Status of guerrilla (local). 4. Security (looal) area, attitude of local civilians, eacapi plan and Alternate areaa, enemy situation, civilian support available. b. Principal Assessment (A continuous estimate of the situation). 1. information of 1he enemj tol&...

Deliberate Clearance Of Mined Areas

After an advance it may be necessary to clear own and enemy minefields which impede movement in near areas. All clearance should be done by remote control . The method employed is as follows. After locating the mine by eye, prodding or detectors- (a) Carefully uncover the mine. (b) Carefully attach 100 yards of cable to the mine. (c) Retire to the full length of the cable. (d) Draw the mine over the ground towards a shallow V shaped trench already dug to receive it. The mines should be drawn...

Detailed Action Of Rifle Cartridge In Firing

Ii is a well known physical fact that motion cannot be produced except at the expense of time and, therefore, the bullet does not move immediately, as its inertia must first be overcome. Now, possibly the reader has seen either in the moving pictures, or in magazines, extremely slow motion pictures of a golfer driving a golf ball. The ball does not move off the tee immediately when the face of the 265 club comes in contact with it but proceeds to flatten out under the impact in a dough-like...

Detonating Cord

The flam Illuminator ia a field expedient effective W P HAND GRENADE ASSEMBLY for limited illumination of eUcUd area of the battlefield. It eoaaiatfl of a container (5- to 55-KaUon) filled with thickened fuel lo within 3 inchea of the top, a WP hand greaade to ignite the fuel, an xplooive charge, and it firing Figyre 2

Directions At Night

POLE STAR (FIGURE 4) - In the Northern Hemisphere, the Nortl Star (Polaris) is a reliable direction-finder, because tt is always nearly true north oI the observer. The problem is to locate it. By checking against the pattern shown in Figure 4, first identify the seven start in the Big Dipper, and then confirm this by finding the live stars in Big W (Cassiopeia). Polaris lies about halfway between these star groups, and the two pointers aim almost directly at it. b. OVERHEAD STARS - If the...

Disregard This Transmission

I must pause longer titan s few seconds. This message contains the number oi groups Indicated by the numeral following. Repeat this entire transmission back to me exactly as received. The following is my response to your Instructions to read back. Whit you have transmitted la correct. Your last transmission waa Incorrect. The correct veralon is Transmit this message to all addressee or to the address designations immediately following. The portion of the message Co which I have reference 1s all...

Dj

A reception committee is formed to control the drop sons or landing area. The reception committee can be anyone who is capable of performing the following duties. A permanent committee for each unit provides tha beat reeulta, eliminating the need to croaa train every one to be capable of ihia mission. However, training in depth should be acoompllabed to insure that losses of key personnel will not adveraely. affect the operation of the group as a whole. (1) Provide eecurtty for the...

E T

Then stocked in good dark American walnut, the stock fitted with making new parts where necessary, adjusting the set triggers, and steel grip cap, horn forend tip, and a Mannlicher-Schoennauer butt- finally stocking it to the queen's taste plate with long trap. The shape and dimensions of this stock are The admirer of big calibers will perhaps unearth a Sharps-Bor-not adapted to many shooters, but they suited Dr. Jenkins, who chardt action, with a barrel for some obsolete cartridge, and will...

Elevation

Rope diameter at the splice is not objectionable. A short splice should not be used when the rope will be passed over a pu'.ley. (1) Unlay the strands oi each rope for at least five turns. (2) Bring the ends or the rope together so that each strand of one rope rests between two consecutive turns of the other rope. PiotnuE 43. Colling and uncoiling right-lay iop .

Emergency Handling Guidance For Explosive Devices

Stick Hand Defensive Hand Offensive Hand Milk Can Hand Shaped Charge Hand Shell Case Tin Can Antipersonnel Concrete Fragmentation Concrete Mound Betel Box Turtle Pineapple Fragmentation Dud Shell Min Antipersonnel Bounding Fragmentation DH-10 Directional Bevelled Top Water Truncated Cone Water Small Truncated Cone-Shaped Large Truncated Cone-Shaped Turtle Cylindrical Pole Oil Drum Bangalore Chemical Pressure-Electric Firing Wristwatch Firing Mousetrap Firing Angled Arrow Bicycle Mine. Cartridge...

Ends Of Lead Wire Projecting Into Charge

Or high explosive contained in a waterproofed textile covering. It Is set off by a cap taped or tied to it. Instead of burning lifc* a time fuze, it explodes like other high explosives and will Set off other explosives properly connected to it. It is used mainly to set oil a number of charges at one time or to fire a charge in a deep hole. Its action is Instantaneous therefore, whether the detonating cord is fired by an electric or nonelectric cap. the firer should take the same precautions as...

Enemy

100 60 tern of sentinels Ls maintained to accomplish the second a well-integrated system of obstacles, always defended by antitank and small-arms fire, is used. The small-arms fire prevents the removal of the obstacles by enemy engineers. Figitre 1C9 Tank stopped by antitank ditch Fiaua* i 10. Tank stopped by log wall

Engineer Reconnaissance

Reconnaissance means the obtaining of information by going out and getting it. Engineers need a great deal of special kind of information to carry out their jobs. As an engineer soldier you may frequently accompany a reconnaissance party you must know what you arc looking for. A good engineer reconnaissance man has two essential qualities a. He must be continually alert. b. He must be able to determine the importance to an engineer of everything he sees. 85. What to Look for. You...

Engineer Tools

The engineer soldier is an expert in many things. One of his most important skills is the use of many kinds of tools some, hand tools, others, power tools. Tools are the basic implements o the engineer. They go along with Ills unit and arc always at hand. With tools the engineer accomplishes many tasks. How well and how quickly he does his Job depends upon < 3> The condition of his tools. b. All of these are the responsibility of the Individual soldier. His own life and...

Engineers

I 1, What It Means To Bs An Engineer.- You are an engineer. You are going to build bridges and blow thorn up. You are going to stop tanks and destroy them. You are going to build roads, airfields, and buildings. You are going to construct fortifications. You are going to fight with many kinds of weapons. Yok are going to make sure that our own troops move ahead against all opposition, and you arc. going to see to it that enemy obstacles do not interjere with our advance. You are an engineer. 2....

Equipment

T.JAV1NG rigged up a place to work, and assembled a few of the most essential tools, the amateur gunsmith will next consider certain other equipment, some of which is necessary to certain jobs, while other items may be dispensed with, but will nevertheless add both to the pleasure, speed and convenience of the work. For the gunsmithing trade calls at times for tools not regularly listed or manufactured, and which if ordered specially from a tool maker, would cost a great deal. Fortunately, most...

Estimate Of The Situation

MISSION MlBBlon aaaignsd and a ialyel* ther*> f to live lud a que nee of tank(s) to be performed ajvJ the porpoae. i. Consideration aiiectlfig poaalble couraea of action. (1 Characteristics of the area of operation weather, terrain, other. (2) Relative combat power enemy situation and irkam ly sltuatloa. c. Ovrn course* ofacUon Who, What, When, Where. Why, and Kov as appropriate.

Expedient Printing

BANANA LEAF SPECIAL - Any broad lea which is still green (so that it cuts easily) will work. It is important that only broad lines and a bold design be used. Copy the design in pencil on the underside of the leal. Using a raror blade or sharp kniie, cut out the letters and desigr. leaving enough bridges of leaf through the design bo hold the stencil together. Place the completed leaf stencil, underside up, against the surface on which you want to print. A leaf stencil may be used to print on...

Fva

Their quality is improved if forged a little before shaping up. Temper in oil at light straw, and hone edges carefully. SPECIAL RASPS AND RIFFLERS, for wood and metal often save time and labor. These should be made from high grade tool steel, the teeth carefully filed in after a little forging to make the grain more compact, and then hardened in oil at bright red heat. Draw the temper in a clear gas flame, but draw it just as little as possible just enough to take the stress out of...

Fabrication Of Burster And Burster Well

The burster well is made of thin sheeimeul and is of a diameter that will fit within the can opening. It lias * right angle flange on the open end, which keeps it from slipping entirely within the can and helps to form a seal. The length of the burster well should trz approximately I-inch less than the depth of the can with which it is used. b. The burster, consisting of the components listed below, is contained in a cylindrical cardboard container closed at one end and of a diameter that...

Fig

Heat the end cherry red and quickly clamp it in the vise, then upset the end to desired size by hammering. Two heats may be necessary. Then heat and shape the shank as desired, file to shape, harden, and temper at light straw. The edges should then be sharpened on an oilstone. Square the shanks and fit file handles. Make up a bottoming tool whenever you feel ambitious there's no such thing as having too many of them. Special shaped chisels are sometimes made by filing a piece of drill rod to...

First Steps For Beginners

THE man who has never attempted even a simple repair on a gun and who is notoriously inadept with tools can scarcely expect to start in and turn out the class of workmanship found in the best shops. Gunsmithing, while a trade in itself, is really made up of the rudiments of other woodworking and metal working trades, with a number of specialized branches and operations of its own. For this reason the rank, raw beginner is often less handicapped than the man who is expert in one of the branches...

Flselighter

Huich Flax (Bum* for M minutes, ltgtts dl* 50 Meters). (1) Remove cross bar from metal tOmm tnoriar cu. (2) Punch 3 3 6 holes ineach side 1 2 way between top and bottom. (5) Punch hola not bigger than 1 8 In bottom of Ilmm morUr metal ehell container. (4) Tamporartly fill holes, fill container 3 4full w thickened fuel, apply hasty greaae to capa ard iffix tightly. . 5) Place i containers capa do*-n lo 60 mortar container, wedge tight witi stones, etc, thin fill 50 mm mortar can with...

Folded Head

Greatly increase the strength and safety of our present rifles, but is unlikely that this generation will sec any steel eases used for commcrcial ammunition, unless some cheaper method of manufacture than we have at present is devised. A detailed description of cartridge case manufacture would be of little practical use to the reloadcr but some understanding of the process and of the physical nature of the finished case is necessary in order to understand the changes that take place when the...

Foreword

The purpose of this handbook is to provide United State military personnel with a compact source of orientation and recognition data on improvised equipment and explosive devices in use by the Viet Cong in the Republic of Vietnam. The Viet Cong forces have acquired wide experience in constructing grenades, mines fuzes, explosive charges, and other deadly weapons and devices by using commonly available materials. These devices, cunningly plsced and camouflaged, have caused many casualties. The...

French Light Antitank

This box-shaped mine has a corrugated lid below which are two igniters. During transit a channel-Bhaped safety bar, inserted through the end of the mine and running the full length of it, protects the igniters. These mines are usually transported with the igniters in place. Take out the pin from one end of the safety bar and pull out the bar by the ring at the other end. (a) Lay out a 50 yard length of cord or cable from the mine to a suitable cover. (b) Attach one end of the cord or cable to...

Functions Of Comfonents

Suspension lines - suspend load from parachute. b. Break cord - after the static line deploys the parachute, the break cord break , separating the static line from the aircraft. c. Suspension loop - links the parachute and load. d Load cover - protects the folded parachute while the load is being moved from loading site to aircraft and during the flight. It is ripped off by deployment oi the static line when the load is cropped. e. hemstring forms the parachute into a hemispherical shape and...

G

By different kinds of engineer units. a. The footbridge M1938 is constructed of separate rafts called bays, each 12 feet long, consisting of a duckboard supported by two floats. (See flg. 118.) 70. Ftxed Bridges. The most common military flxed bridges are the simple stringer bridge, the trestle-bent bridge, the light portable steel bridge, often called H-10, and the Bailey bridge. c. The simple stringer bridge is usually short. It consists of three elementary parts two abutments, a single span...

G y MK F fifrCMa v

TNT or Baratol. Minimum Safe Spacing with Sarbo rings 2 yards* without, 5 yards. Rings are not used now. Can be submerged in water for 48 hours. 90 waterproof. Two types of fu ses are used, British and S.A. Patterson, in 2 parts. British type has no shear pin, so must be disposed of. Arming. (A) Lay mine in prepared hole. Unscrew base plug and leave underneath mine. (B) Screw No. 1 fuse in finger-tight. (C) Cover and camouflage, Disarm. (A) Turn mine on its side. (B)...

General Description And Comment

1 he turtle mine, constructed tif concrete with explosive inside. used , , primarily a. , demolition ,h-rgc. , be de, noted by either a, dectmal J1 .T* U f ,a dd ''J1* < * ZT' l X or mechanical i.ze < vilh or without delay). The mine illustrated . lb* . hf T1 *JT * t l il mechanical iuu . ihe exptoaiv* for an electrical detonator. flatterie* r a handli la jen- erator supply thr. current to activate the deton& tnr remolrl). The mine ia CHARACTEIUSTIL* uaually found frng jnuda or trail*,...

Gun Springs Supplied By Ous Habich

No*. 1 to 7 Inclusive Top Lever Spring*. Noa 1 and 8 tor Belgian suns. Noe. 8, 4 and 5 tor Bnglleh gun a. Mo. I for Belgian 8tde Lerer. No 1 for En*lt h Sid Levar. Main Spring* for Breech Loading Gune. No. 8 Bar Action Knrlleb cr Balkan. No. 8 Bar Action English or Belgian No. 10 Bar Action. Lock Plat , eprlnf aeti back of hammer. No. 11 Bar Action Enjrllah or Belgian. No. 12 Back Action, Belgian, one 5> nnr. rebounding lock. No. 13 Back Action. Engllah or Balglan. o. 14 Bar Action. Bagilah...

Wid

Can buy others as you need them, for the cost, barring the cost of a new dental engine, is surprisingly low. As this is written I am advised that the S. S. White Dental Mfg. Co. are putting on the market an engine to sell at 25.00 lacking the motor. The shaft is made to attach to any small motor, with suitable connections. Figure 4 shows a number of dental burrs (they are always called burrs and not drills) useful to the gunsmith. These come in sizes from No. 1 2 to No. 11, ranging-from about...

Handloading Vs Ballistics

It is customary in any work on the subject of hand-loading ammunition to describe and discuss the various types and makes of loading tools which are on the market. This will not be done in this book for two reasons. In the first place, all one can do in a discussion of these tools is to express opinions and point out faults or virtues, or at least those things which the particular writer considers as faults and virtues. After all, these are but personal opinions and they oftentimes create an...

Hard Fitting Of Small Parts

WfHEN the gunsmith is called upon to fit new factory parts to * * the mechanism of a gun, he usually finds that such parts are slightly oversize here and there, to allow for variations in size of other parts. Similarly, when making new parts in the shop, they should be left slightly oversize throughout, the file shaping and preliminary polishing leaving them from .001 to .002 oversize. They are then hardened and tempered, or case-hardened, as required, after which the final or hard fitting...

Headspace

Forward and while this docs not ordinarily result in any weakening of the case, dicre arc exceptions to this general rule. It may be a matter of chance or it may be due to soft spots in the case but occasionally a case wall will be weakened from this cause. The strain, if any, may occur anywhere from the shoulder back to the head of the case. A few years ago, the writer conducted a series of experiments for the Cuban Army, in order to determine the approximate rate of elongation of the .30 06...

Hi

The Southern wood is somewhat lighter than that grown in the Northern states. Almost all American walnut will show fiddle-back when quarter sawed with the exception of the Texas walnut previously referred to. In selecting wood for a high grade stock there is a natural tendency to choose a quarter sawed plank in order to get this effect. Theoretically this is the wrong thing to do if maximum strength is sought. Figure 38A shows a sectional view of a walnut log...

Hmd

(FBCK.TW1LLCI.03C ON TM3 CJ4GC RIF IE 5H0UL D BC liCTuRrtCO TO MAKER FOR REPAJftS. HEAD-SPACE GA6ES. .30-06 CARTRIDGES get too brittle or hard. The first die necks the case down to perhaps .290 calibcr, the second to .275 caliber, the third to .265 caliber, and the last die completes the reforming and necking so that the neck novy measures .255-inch inside and both neck and shoulder arc rhe required shape and length outside. (.25 caliber bullets usually measure .257-inch, and neck for a...

Hungarian Antipersonnel Mine

This is a very sensitive anti-personnel mine which may be operated by as small a pressure as 7 lbs. It consists of a rectangular tube of metal, one end of which carries the striker mechanism. The mine usually lies in an inclined position with the striker at the highest end. A brass tongue on the operating device is inserted in one of the holes in the striker. A small downward movement of the mine releases the striker and so fires the mine. (a) Pull out the striker by means of the cross-piece...

I

AMPULE & No. 8 DETONATOR. No. 1 EXPLODER. Tota3 weight of mine 9 1 2 lbs. Filling. 4 1 2 lbs. of Gelignite or 6 1 2 lbs. of TNT. Testing. Examine No. 1 exploder for oily exudation or outside rust. Examine plunger tor damage to shear wire. Smear upperr portion of plunger with grease and insert in plunger guide. Test for clearance with No. 8 detonator. Remove cover of mine and straighten straps. Examine exploder packet for oily exudation. Test lid for fit. Should not be...

1

Hand rock drill nnd hammer. inches In diameter and the other holes 10 inches in diameter. (See fig. 17.) These augers are useful in drilling holes to place charges for road craters. 50. Primers. A primer is a block or package of high explosive with a cap placed in it, or detonating cord tied through or around it. A charge is primed by placing in it a primer prepared as above. The purpose of the primer is to insure detonation of charge. The cap or detonating cord sets off the block or...

Assembly

Fill container with thickened fuel and seal. b. Tape the explosive tightly to the container. The explosive should be prepared as shown in Chapter 4, FM 5-25. c. Prepare a detonating cord-WP hand grenade assembly (see flame foagassc to ignite the fuel. d. Attach electric wiring or detonating cord so that the weapon may be fired individually or in multiple form. e. A safe distance should be maintained between the firing point and the area of detonation. f. Devices may also be fired by fusing...

Fks

.31 Spccial cases with folded hearts which ha e had the webs cracked and blown away. This is a serious tault In fired eases and should be watched lor. It permits an excessive pressure to reach the primer, driving it back violently against the recoil plate of the revolver and may damage the latter. A. revolver recoil plate which has been cracked by the primer set-back from high-pressure loads or cases having enlarged

Improvised Ranges

Kind required by Um trainlag ariaeloau 2. Tt t 1 time from camp to training are . 8. Safa impact area Clear before each firing). I. Terrain allow proper field of Or for training to be conducted. 1. TU la an Introductory rangs to give the train practice In target with speed and accuracy. 2. Varloue targets euch aa bottles, platte, etc., of-various colore and shapes are placed In clear n w of the flrer are at various ingles from the flrer. He la then Instructed to engage targets by...

Ibs B

(e) The surface gradient of the LZ should not exceed 2 percent. (5) Approach and takeoff clearance. The approach and takeoff clearances are baaed on the glide-climb characteristics of the aircraft For medium aircraft the glide-climb radon is 1 to 40 that la, I foot of gala or loae of altitude for every 40 feet of horizontal distance traveled. The ration for light aircraft Is I to 20. as a further precaution any obstructions in approach and departure lanes must conform to the following...

Ici

Sironi rapid pulse Spots before eyes Haadathe ilea* from poisonous AIUI Will Clttl Apply cool coaipresaea or bathe patient In cool water. Hove patient to abade. irsat aa for shaet. Do not rub, bend or eipoee Co Vr further Wars area to body temperature by holding close co warn body er eupoeiftt tc wanstk i. Apply a tourniquet 2 4 Inohaboro the bit . Don't put M cm loo tightly. The object li to retard tbo Oonr of blood returning to Una heart not to out off circulation altogether. Make una there...

Id

Kapedicnt firing of 3.3 rocket nofselpcwically. (1) llimo all ire iron* fin u**mblr. (2) l< cmo e the plastic con from fin asaembly. llac* m tchV iia nr other NirningmatertaJ in contact with Ihe ends of the ick* of pimped ant. ( 1 rjp< malchce round end of fuse. fh) I'lorr fu e r.ush iffi-nit perforated diac. mvJ among mat Nhaida already in I've n x*J . should equal the circumference of the target, and the points should just touch on the far aide. The short axis Is equal to one-half the...

Ihproved Trigger

Number of Ross rifles, some of them with pulls reduced pretty fine, and none have ever failed to stay cocked even when the bolt was worked very rapidly. Figure 174 shows an ingenious alteration made to the Model '19 N. R. A. Savage and described in the American Rifleman, to give it this same double pull. The original trigger was worked over as shown into a sear, and a new trigger made. This should prove a real improvement by permitting a much finer pull than is now possible on these arms.

Ii

As a guide, markings moat Kara clear tac of at least 500 yards (460 meter a) from a 100-foot (SO meter) mark (Figure 9). 2. Additionally, precautions moat be taken to Insure that the marking* can be seen only from the direction of the aircraft approach. Flashlights may be equipped with simple hooda or ahielda and aimed toward the flight path. Fires or improvised flares are acreened on three sides or placed In ptta with aldea eloping toward the direction of aircraft approach.

Iii

FWith t fumper wire.provide apathfor the electrical current passing through most raJls. ThewlretUtlsnomallybetween ralls will be broken by thJ aanual dlsplacement. d. Ckdy piaatt **f> lo iYt hvuldbeuaod, Itter C3 or 04. Information has been developed for breaching rslaforced ooncreta targeU from 1 through 8 ieet in thlckness. For maxi nun ffect, the Charge should be placed s dlstance equal to the thlckaesa of the targvt above the base (or abeve the ground level). Chargee placed at the beae of...

Weapons

A tent rope may be used as a field expedient cleaning rod for all small a rms. 2. Range determination and the MM (Figure I) - A new expedient method for the rifleman to determine range with his weapon works on the principles of stadia. The stadiometric ranging method of determining distance depends on solving the triangle established by the angle subtended at the observer's position by an object of known size. The main requirement is for the iirer to gel firmly established in his mind what a...

Il Unconventional Warfare Composed Of The Interrelated

HL MISSIONS OP GUERRILLA FORCES (1) Interdict en my 11 no a of communication. (3) Interdict enemy InatalUtlcm tad center of war proAwtloo, tad ooo-duct other otfenalr* operation In support ol oonrentSonal military operations. 2) Psychological warfare. 9) Evasion and capo. (4) Subversion against hoetila state*.

Index

Airdromes Antitank Assault oi a fortified 72-77 115 JO 0 Combat weapons I Corps of Demolitions Elementary rigging-, Engineer soldier and tli* Corps of Engineers 1-3 l Engineers anc tanks - 46-55 . Felling Field fart float lone------------------------- 3rr , ,7 II 144 Fortified positions, assault 02-66 103 A P 11 143 APP 1 Proficiency ce*ta APP 111 145 73-71 115 84-36 134 3S Rigging, TgU proficiency----------4 0.33 3 87-39 136 Weapons,

Info Pkr

By functioning of the action may cause the hammer to fall voluntarily, making a machine gun of your favorite fowling piece 1 This applies also and even more so to all makes and models of AUTOMATIC PISTOLS. Due to the distance of the trigger from hammer in this type of arm, and the necessary bars and links connecting the parts, it is not possible to eliminate all of the creep. Very careftil honing of the hammer notch and sear point will bring thc pull on most automatics to between 4 1 2 and 6...

Introduction

O OMETHING over a year ago, in writing to Dr. Paul B. Jen-kins, then shooting editor of Outdoor Recreation, I made the statement that there were a number of points I should like to hare seen discussed in Whelen's Amateur Gunsmithing which were not covered therein. Apparently Dr. Jenkias was impressed with the outline of features which I thought would be of value to the gun crank as well as the professional gunsmith, for he sent my letter to Colonel Whelen without more ado. Now the Colonel,...

It

Criteria for sslectloa of waUr LZ's (1) Size. For medium amphibious or ssaplane-typa aircraft, ths rsqulrsd length is 4,SOS feet (1,220 meters) with a minimum width of 1,900 fast (460 meters). For light aircraft, ths required length Is 1,000 feet (613 asters) long and 900 fsst (1S3 meters) wide. As with land LZ'S, and additional aafs area equal to 10 percent of ths airstrip length la required oa each and. (Figure 18) (2) Surface. Minimum water depth Is ft feat (2 meters). The entire landing...

Iv

(f) Riling ground or hills of more thas 1,000 feet (909 meters) elevation above the surface of the lite should normally be at least 10 miles from DZ for night operations. In exceptionally mountainous areas deflations from this requirement may be made. Any deviation will be noted In the DZ report. (h) Deviations from the aforementioned minimum dlaiancee cause the aircraft to fly at higher than desirable altitudes when executing the drop. (2) Weather In drop areas. The prevailing weather...

J

DlipereSoo ( computed using thsruls-ef-thaaab formula 1 1 pead of aircraft (knots) x exit time (seooads)a diepereloa (Meters). Exit time Is the lapsed Ume between tha axils of the first and last Items. The length of the diapers km patters represent* the absolute Langth et dispersion pattarns la metsrs squale 1 2 tirerait epeed (ln knots mes es tixns (la eeooode) Islwmsi Isngthrequlredfor DZ'e. tf personnel are to be dropped, a safsty faetor of et Isast IM asters le addod to saoh eod of the DZ...

Shelter

Plok a high a pot when maklngoamp. Avoid dry rirer beds, dead treee, ud ant neat*. Arold bet catos, droppings may cause rabies. b. Do not sleep on the grouadlf you can avoid It. Uee your hammock If you have on , or make one of poncho or tha multi-purpose net. II thla Is not possible, fcuild a platiorn of bamboo, a mail branches, etc. It trill aeaiet in avoiding insects, reptiles, ate. (1 Simple paraohuto shslter made by draping a parachute over a rcpe or vine stretched between two troee. (2*...

Wop

The purpoae oi D2 marking* It to Identify tha site tor the aircrew and to indicate the point over which the personnel and cr cargo ahould be released (release point). The procedures for marking DZ's are determined prior to Infiltration and are Included In the SOI. (11 The marking of DZ's at night during clandestine operations will normally be cnly by flashlights. Flashlights manufactured In the country are easily procured by the guerrilla , gire adequate directional lighting whan...

Ivw

Rotor oxlits, helicopter can land on a plot of ground slightly- larger then the spread of its lending gear. For night operations, however, s safety (actor ie allowed with the following criteria as a guide (1) An area of 50 meter in diameter cleared to the ground. (2) As area beyond thie, eurroundlngth cleared area, 20 metere wide and cleared to within 3 feet of the ground. (3) The completed LZ is thus a minimum of 90 meter in diameter (Figure IS). _

Dcp

Ferred by a number of shooters after years of experimenting with stocks. They claim that such lines speed up the aim and prevent over or undershooting, since the aiming eye is held at the same relative height above the rib, no matter where the stock may be cheeked. The man with a long neck or very sloping shoulders, however, finds that such a stock brings the butt too high on his shoulder so the solution for him is a Monte Carlo comb, as shown in Figure 72. This gives all the advantage of a...

Uwd

Reticle E inserted in baee A and 'jsing alidc B will er.able you to teach aljht settings and .take displacement with the mortar. Reticle C inserted In ba e A and aaing slide B will enable you to teach night uettinga and .take displacement with the Dovy Crockett. Reticle c inserted In baoc A and u*mg the jeep and burst from Tab F s enable you to teach burst on arget method oi firing the Davy Crocxctt. Reticle D inserted in base A and naing jeep and burst from Tab F will enable you to teach the...

Vgz

And for drilling small holts, and I am indebted to Dr. E. W. Harper, of Watertown, S. D., for introducing me to its greater possibilities. Dentistry is one of the highest branches of scientific mechanics, and the man at the bench may, by using his head, learn much from the man in the laboratory. SPECIAL HOME MADE TOOLS The gunsmith, requiring a tool not regularly made and sold, usually makes what he needs for the job at hand. There are, moreover, numerous tools used almost constantly that he...

Jv

TIIL LANXWO ZONES FOB ROTART-WWG AIRCRAFT (1) Wlthla their range limitation*, helloopters provide so excellent means of eveceatice Their advaatagpse laotads the ability toi (a) Aeoead aad rtssosnd almost vertically. (b) Laid en relatively small plots of ground. (O) Bover aearlv motlonlsss. and take oaor discharge psraatnei uvi carf It** '* (d) Fly safSty and efficiently at low altitude*. (2) Some unfavorable characteristics of bslloopters are (a) They compromise secrecy by eeglneand rotor nciaa...

Kwifc

Th Botilenge chronograph hook-up before tho shot ha* b* n of the gun and continuing to the left, say, in increments of ten feet each, running up to at least eighty feet. The right hand vertical side of the sheet should be marked off in units of velocity. Fire a series of shots at 78 feet in the usual manner and plot the result as one point of a velocity-distance curve. Then move the terminal target up to about 38 feet from the muzzle, fire another series of shots and plot a second point on the...

L

S) Steel rule. x. Squares (sec fig. 26). The try square is used to test square edges and surfaces. The steel framing square is used to measure angles and to draw the various lines needed by a carpenter. y. Level (see fig. 27). The level is a precision instrument. By means of the bubble < bead) In the phials in the level, the engineer can determine whether or not a surface is horizontal or vertical. When the level rests on a surface and the bead, is centered in the tube,...

L Evasion

Flr t, get is far 1*17 aa possible. Sometime thie may mean auroral miles at other time a, Just a lew yard . Plm your escape, do not ran bUmfly. Uae your head there U no subetltutefor common ease. Ae eoon aft possible, sit (town, think out youx problem, recall what you learned la training. b. Pinpoint your location in accurately ss possible, using your oompass, tun, map, known landmark*. etc. If your compass is broken or lost, remember that when facing the eunrlse. North la to your left. The...