Info

The direction depends on the type of target and whether the target is engaged with a pair of gunB or a single guft. When engaging targets other than point targets with a pair of guns, the targets are divided so that fire is evenly distributed through the target area. (2) Fire delivered on point targets or a specific area of other target configurations is called concentrated fire. (1) There are three rates of fire with the machinegun slow, rapid, and single-shot....

Appendix B Position Of Parts For Lefthand Feed

Belt iead kver, houkler beadle pin, and prfoi Upp (nw) hot , Luf of feed l v* h on left elde of covtr. Belt feed paw) ii oo left tide of oover. Bait t d pawl toward Uteh end of oovtr, potntint right. Covtr latch aft Left tfdt'of covtr. Cartridge top acd link fat-hand rear cartridge top aetecnbly *nd front cartridge

Inspection And Destruction

MALFUNCTIONS AND STOPPAGES A stoppage is any interruption in the cycle of operation caused by the faulty action of the gun or ammunition. The first thing to do when a stoppage occurs is to apply immediate action. Immediate action is the prompt action taken by the firer to reduce a stoppage (para 86). a. General. Stoppages are classified as follows (1) Failure to feed A stoppage that prevents the round from being properly position in the receiver group. (2) Failure to chamber A...

Belt Feed Pawl

Feeding belt feed pawl riding over the Figure 89. Feeding belt feed pawl behind the firai round. 98). As the bolt continues forward, the round is chambered. As this action takes place, the extractor lug rides up the extractor cam, compressing the cover extractor spring, and through the pressure of the spring, snaps into the groove in the next cartridge base. a. Initially, the bolt is forced forward in counter-recoil by the energy stored in the driving spring assembly and the...

Technique Of Fire During Periods Of Good Visibility

Technique of fire is the method of delivering and controlling effective fire. Each member of the machinegun crew must be trained in the standard methods of applying fire, either as a crew member or an individual, and must perform his assigned task automatically and effectively. b. The simplest and most effective technique of delivering fire with the machinegun, mounted on its ground or vehicular mounts, is to aline the sights of the gun on the target and properly apply fire. This technique...

Elevating Screw Knob

The gun has a leaf-type rear sight, graduated in both yards and mils for ranges from 100 to 2,600 yards, and from 0 to 62 mils. A windage knob permits deflection changes of 5 mils right or left of center (fig 2). The front sight is a semi-fixed blade type with cover (fig 3). Weight of receiver group____________60 lb. Weight of barrel____________________24 lb. (approx.) (w traversing and elevating mechanism and pintle w bolt) ----------44 lb. tripod mount, M8_________________128 lb. (approx.)...

Browning .50 Breech Lock

Breech Lock

Accelerator tips fig 22 , Raise the rear of the bolt and continue to push the bolt forward until the bolt latch engages the notches In the top of the receiver. Not . The barrel extension, barrel buffer, and bolt groups may he assembled and returned to the receiver together fig 2S . d. Bolt Stud. Aline the stud hole in the bolt with the clearance hole and replace the bolt stud, insuring that the shoulder of the stud is inside the sideplate. e. Driving Spring Group. Press up on the bolt latch and...

Chapter Antiaircraft Gunnery

ENGAGEMENT AND EMPLOYMENT a. Individual caliber .50 machineguns can provide unit with a self-defense capability against hostile low-flying, low-performance aircraft. These guns are employed in the air defense AD role as part of the unit's local defense. The machine-guns are not components of an integrated and coordinated AD system. Normally, the following rules for engagement apply 1 Attack aircraft identified as hostile. lt 2 Attack aircraft committing amp hostile act. b. Unless...

Base Of Cartrioge Entering Tslot

Feeding cartridge entering tke T-slot in the bolt. the trigger pin, so that the trigger cam on the inside of the backplate engages, and raises, the rear end of the trigger lever, which, in turn, pivots on the trigger lever pin assembly, causing the front end of the trigger lever to press down on the top of the sear stud. The sear is forced down until the hooked notch of the firing pin extension is disengaged from the sear notch. The firing pin and firing pin extension are driven...

Chapter Operation And Functioning

Operation includes loading or unloading the gun, clearing the gun, or allowing the bolt to go forward. 14. Half-Loading and Loading the Gun a. To half-load the gun, the gunner insures the bolt is forward and the cover is closed. The assistant gunner inserts the double loop end of the ammunition belt in the feedway until the first round is engaged by the belt holding pawl. The gunner grasps the retracting slide handle with the right hand, palm up, and vigorously jerks the bolt to the rear and...

Application Of Fire

Must be distributed over the entire target area. Improper distribution of fire results in gaps which allow the enemy to escape or use weapons against friendly positions without effective opposition. The method of applying fire to a target is generally the same for either a single gun or a pair of guns. . Engaging Ground Targets. There are five main factors that govern employment against ground targets. 1 Greater accuracy when fired single-shot. 4 Any number of guns may be operating together at...

M2 50 Cal Early Late Timing

1 During instruction in headspace and timing adjustment, use a caliber .50 machinegun and a headspace and timing gage for demonstration and practical work. 2 A large wooden operating model of a headspace and timing gage should be obtained for use in demonstration. S Fllmstrips and training films covering headspace and timing adjustment give clearer understanding of the subject. b. Organization. Organize the cIbbs as explained in paragraph 176 amp . 1 Stress the importance of correct head-space...

Belt Holding Pawl

Belt Feed Conversion Diagram

Feeding belt feed elide moving utif the cover, with the belt feed pawl behind the flret round. too soon and catching in the breech lock recess in the bolt. After the bolt travels forward about 5 inches, the lower rear projection of the bolt strikes the tips of the accelerator, turning the accelerator forward. This unlocks the barrel extension from the barrel buffer body group and releases the barrel buffer spring. The barrel buffer spring expands, forcing the piston rod forward. b....

Legend

Final Protective Line

Military symbol applicable to th caliber 0 mavhinegun. is recorded on the sketch for security reasons ftff 146 . k. Obtain data to target areas. 1 When a final protective line is assigned, determine the maximum extent of grazing fire on this line, then draw a solid line in extension to the basic symbol for the machinegun. This line ends in an arrowhead. Sketch a shaded blade on the inside of the final protective line to represent the extent of grazing fire. If the final protective...

Shoulders

Set Headspace And Timing Cal

Ruptured cartridge case extractor j cal. 50 4933 -7 160041 ' - ' vt- - . w Figure 110. Caliber .50 ruptured cartridge case extractor. ruptured cartridge case extractor j cal. 50 4933 -7 160041 ' - ' vt- - . w Figure 110. Caliber .50 ruptured cartridge case extractor. Figure 111. Ruptured cartridge case extractor alined with the chamber. Figure 111. Ruptured cartridge case extractor alined with the chamber. remove the ruptured case and extractor fig 110 2 Always check headspace and timing after...

M2 Browning Cover Top Plate

Cal Cover Group

Removing the cover extractor spring. Figure 6 . Replacing the cover latch spring. Figure 6 . Replacing the cover latch spring. 2. Slowly release pressure, and remove the belt feed pawl and arm fig 58 . 3. Disengage the belt feed pawl arm from the belt feed pawl fig 59 . U- Remove the belt feed pawl spring, e Cover latch spring. Pry the hooked end of the spring out of its groove in the cover, and shift it to the left until it rests on the cover extractor spring. Press down on the...

L

Inserting the headspace gage. Figure SI. Inserting the headspace gage. insert the NO GO end of the gage if it does not enter correct headspace is set. Remember, to unscrew the barrel, or to screw the barrel into the barrel extension, the lug on the barrel locking spring must be alined with the -inch hole in the right side plate para lb. . 6 If the NO GO end of the gage enters the T-slot, headspace is too loose. The barrel must be screwed into the barrel extension one click at a time...

Cartridge Stop Assembly

Figure 7U- Cartridge stop assembly, front cartridge stop, and belt holding pawl pin. Figure 75. Removing the trigger lever pin assembly old type . Figure 75. Removing the trigger lever pin assembly old type . Figure 76. Removing the trigger lever pin assembly new type . Figure 76. Removing the trigger lever pin assembly new type . Figure 77. Trigger lever present design , and trigger lever pin assemblies. Ffeur 7S. Trigger lever replaced rear view . Ffeur 7S. Trigger lever replaced rear view ....

Appendix H Aerial Target Engagement

In engaging aerial targets, there are two requirements that must be considered Line and Lead. Lead is the compensation made for the speed of the aircraft and the projectile that will allow the two to intersect at a given point The required lead for a given aircraft is always calculated as a certain number of lengths of that aircraft. A high performance aircraft will require a greater lead factor because of its high speed than a low performance, slower, aircraft. Line is the requirement that the...

Chapter Mounts

Gun Systems

The two principal ground mounts used with the caliber .60 machinegun are the tripod mount, MS, and the antiaircraft mount, M68. The tripod mount, MS, is a ground mount designed for use against ground targets. The antiaircraft mount, M6S, is a ground mount principally designed for use against aerial targets. Its use against ground targets is limited because the mount tends to be unstable when the gun is flred at low angles. b. The three principal vehicular mounts used with the caliber .50...

Chapter Crew Training

The purpose of crew drill is to develop precision, speed, skill, and teamwork in the techniques of examination of equipment, placing the gun into and taking it out of action. In crew drill, precision must be stressed. Once that is attained, speed, skill, and teamwork will be developed. b. Duties are rotated during crew drill to allow each member of the gun crew to become familiar with the duties of the other members. lt . Precision is attained only through adherence to prescribed procedure....

Appendix F Telescopic Sights

At the present time, there is no definite telescopic sight designed for exclusive use with the Browning machinegun, caliber .60 HB, M2. However, the telescopic sight M86C can be adopted for use with this caliber .60 machinegun by adjusting the sight reticle. Any direct fire sight that can be adapted to fit in the dovetailed slot on top of the receiver, and can be adjusted for range, is suitable for use with this caliber ,60 machinegun, A telescopic sight is primarily used when the machinegun 1b...

Qo A

Applying tk 1 OO-mlUr writ of m a ur method for nsnget gnaUr than 600 v t rt. 1 Training should be conducted to familiarize the soldier with the appearance of other familiar objects, such as weapons and vehicles, at various range . 2 Factors which affect the appearance of objects must be considered, and an understanding of these factors will help to make estimates more accurate. Tabl 1. Factor Affecting Rangt jBiKtmUfcm by Eye Tabl 1. Factor Affecting Rangt jBiKtmUfcm by Eye Atom...

Barrel Buffer Body Spring Lock

Removing the barrel buffer tube lock assembly. REAR WINGED PART BARREL BUFFER TUBE LOCK LATCH Figure i7. Replacing the barrel buffer tube lock assembly. may have a large slot fig 51 . Guns currently manufactured have the breech lock with the slot on top, for use with the accelerator stop and lock. When the accelerator stop and lock replaces the sear stop and pin, the breech lock with slot will be used. b Barrel locki ig spring. The barrel locking spring should already be staked...

Breech Lock

Unlocking breech lock being forced out of its The spring is locked in the compressed position by the claws of the accelerator, which engage the shoulders of the barrel extension shank fig 101 . . After its initial travel of three-fourths of an inch, the bolt travels an additional 6 inches to the rear, after it is unlocked from the barrel and barrel extension, for a total of 7i s inches. During this movement, the driving springs are compressed. The rearward movement of the bolt is...