Warning Radiation Hazard

RULES AND REGULATIONS Copies of the following rules and regulations are maintained at HQ, AMCCOM, Rock Island, IL 61299-6000. Copies may be requested, or information pertinent to these rules and regulations obtained, by contacting the AMCCOM Radiological Protection Officer (RPO), AUTOVON 793-2964 2965 2966 Commercial (309) 782-2964 2965 2966. (1) 10CFR Part 19 - Notices, Instructions, and Reports to Workers Inspections. (2) 10CFR Part 20 - Standards for Protection Against Radiation. (3) NRC...

Caution

Do not torque over 80 ft-lb while tightening the barrel nut to next hole, to allow for proper alignment. (a) Align barrel nut assembly (8) with hole in the upper receiver assembly (7) using 1 8 inch drive pin punch. If necessary, tighten nut to next hole to allow proper alignment. (b) Remove drive pin punch from upper receiver and barrel assembly (11). Remove upper receiver and barrel assembly (1 1) from barrel remover fixture and vise. Slide gas tube (12) through the barrel nut assembly (8)...

B

The application of maintenance services2,including fault location troubleshooting3, removal installation, and disassembly assembly4 procedures, and maintenance actions5 to identify troubles and restore serviceability to an item by correcting specific damage, fault, malfunction, or failure in a part, subassembly, module component or assembly , end item, or system. j. Overhaul. That maintenance effort service action prescribed to restore an item to a completely serviceable operational...

M16 Lower Blueprint

M16 Lower Receiver Blueprints

Use wooden vise jaws in machinist'a vise in place of brass vise jaw caps, if available. a Clamp solid portion of lower receiver and extension assembly 5 in a machinist's vise using wooden vise jaws. b Using combination wrench 11010033 6 and torque wrench, torque lower receiver extension to 35-39 ft-lb. Torque is read when both wrenches are used together. 3-19. LOWER RECEIVER AND EXTENSION SUBASSEMBLY CONT . 3-19. LOWER RECEIVER AND EXTENSION SUBASSEMBLY CONT .

Army Only

a If the test fails using finger pressure, remove the gage and perform the test again as follows With the muzzle down, stack 8 1 2 to 8 3 4 pounds of trigger weights 1 1 on a locally fabricated spacer weight 12 on the bolt carrier assembly 9 . Insert headspace gage 10 and test per above instructions. b Remove trigger weights 11 , spacer weight 1 2 , bolt carrier assembly 9 , charging handle 8 , and headspace gage 10 . c If excessive headspace, first replace bolt assembly and then recheck. if...

Note

Most weapon serial numbers are 1 8 inch in height, or close enough that this size is acceptable for such restamping. In the event that a weapon has a serial number that cannot be reproduced by the use of the die sets, local purchase of an appropriate size die set is authorized. Replace defective components as authorized Test lower receiver and extension subassembly trigger pin holes and hammer pin holes. See page 3-56. Test lower receiver lobe area spacing. See page 3-56, TEST.

Front Low Light Level Post Assembly

Type Rifle Parts

Prior to disassembly, inspect upper receiver and barrel assembly to determine type of front sight installed, standard or low light level. If a radioactive low light level sight is installed and if it has been damaged, see warning page and Chapter 2, Section V. To avoid injury to your eyes, use care when removing and installing spring-loaded parts. If weapon is equipped with low light level front post assembly, see page 4-2 for usable life and maintenance. To avoid injury to your eyes, use care...

M16 Army Torque Values

This appendix includes a standard torque table of the most commonly torque screws, bolts, and nuts. b. These torque values may be used when torque values are not specified. c. The torque table values are given in inch-pounds. If a torque wrench is calibrated in foot-pounds, you need to divide the listed number by 12 to obtain the desired torque. Torque Values In Inch-Pounds for Tightening Nuts Bolt, Stud, or On standard bolt, studs, and screws having a Screw Size tensile strength of 125,000...

Info

Applicable Configuration All M16 M16A1 Rifles Page Condition Description 3-50 Trigger assembly removed General Safety Instructions To avoid injury to your eyes, and installing spring-loaded 1. Inspect trigger spring for kinks, deformities, and weakness. Replace if defective. 2. Inspect disconnector spring for deformities, bends, breaks, and weakness. Replace If defective. 3. Inspect trigger for chips and cracks and excessive wear on trigger nose. Replace if defective.

Scope

Type of Manual Unit and Direct Support Maintenance. b. Model Number and Equipment Name 5.56mm Rifle M 16 and M16A1. c. Purpose of Equipment. Provides personnel an offensive defensive capability to engage targets for field use. 1-2. MAINTENANCE FORMS, RECORDS, AND REPORTS. Department of the Army forms and procedures used for equipment maintenance will be those prescribed by DA PAM 7S8-750, The Army Maintenance Management System. Air Force users refer to TO 11 W 1-10 for applicable forms and...

Related Publications

COMDTINST M4855.1 ., Comptroller Manual Volume 10 Quality Assurance CTA 8-100 Army Medical Department Expendable Durable Items CTA 50-970 Items Except Medical, Class V, Repair Parts and Heraldic Packing and Marking for Shipment to Inert Ammunition Components Material, Greaseproofed, Waterproofed, Flexible NSN 8135-00-753-4661 Sleeve and Tubing-interior Packaging NSN 8135-00-543-6574 PPP-B-636 Boxes, Shipping, Fiberboard Wood, Cleated Plywood for Shipment and Storage PPP-T-76 Tape, Packaging,...

Air Force To W Coast Guard Comdtinst M

M16a1 Rifle Nomenclature

Supersedes Copy Dated November 1983 TECHNICAL MANUAL UNIT AND DIRECT SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST RIFLE, 5.56MM, M16 1005-00-856-6885 EIC 4F7 RIFLE, 5.56 MM, M16A1 1005-00-073-9421 EIC 4FC DISTRIBUTION STATEMENT. Approved for public release distribution is unlimited. HEADQUARTERS, DEPARTMENTS OF THE ARMY AND AIR FORCE, COMMANDANT, COAST GUARD DISTRIBUTION STATEMENT. Approved for public release distribution is unlimited. HEADQUARTERS, DEPARTMENTS OF...

Corrective Action

FIRES WHEN TRIGGER IS RELEASED WITH SELECTOR LEVER ON SEMI, OR FIRES TWO OR MORE ROUNDS IN SEMI SELECTOR POSITION DOUBLING . step 2. Worn or broken hammer trigger notch 2 . Worn or broken hammer disconnector notch 3 . step 3. Worn or broken trigger nose 5 . Step 4. Worn trigger or hammer pin hole. Gage trigger and hammer pin holes. If gage 12006472 enters any of the four holes, replace weapon p 3-57 . 14. FIRES WITH SELECTOR LEVER ON SAFE. Step 1. Defective selector lever 1 . Replace...

Army Gage Set 8426685

M16 Rifle Bolt

Applicable Configuration M16 M16A1 Rifle Test Equipment Tool and Gage Set 8426685 Small Arms Repairman Tool Kit SC 5180-95-CL-A07 19204 Materials Parts Cleaner, lubricant and preservative CLP item 9, app D Lubricating oil, weapons LAW item 20, app D Lubricating oil, weapons LSA item 21, app D Wiping Rag item 24, app D 1. Remove firing pin retaining pin 1 . 2. Tip key and bolt carrier assembly 2 allowing firing pin 3 to drop out. Catch the firing pin. 3. Rotate bolt cam pin 4 1 4 turn and lift...

Machine Gun M16 Lower Receiver

Applicable Configuration All M16 M16A1 Rifles TM 9-1005-249-10 operator's manual Equipment Condition Weapon disassembled Small Arms Repairman Tool Kit SC 5180-95-CL-A07 19204 General Safety Instructions To avoid injury to your eyes, use care when removing and installing spring-loaded parts. Live ammunition must not be near the work area. 2. Install charging handle 1 and bolt carrier assembly 2 into upper receiver assembly 3 . Join upper receiver assembly 3 and lower receiver assembly 4 . 3....

Technical Bulletins

TB 9-1000-247 -34 Standards for Overseas Shipment or Domestic Issue of Small Arms, Aircraft Armament, Towed Howitzers, Mortars, Recoilless Rifles, Rocket Launchers and Associated Fire Control Equipment TB 43-0002-73 Maintenance Expenditures Limits for FSC Group 10 FSC Classes 1005, 1010, TB 43-0196 Inspection and Certification of Gages - Small Arms A-2. TECHNICAL MANUAL TECHNICAL ORDERS. TM 9-1005-237 -23 amp P Unit and Direct Support Maintenance Manual Including Repair Parts and Special Tools...

Lever Tool Catch

Sear Receiver

Selector lever 7 , if installed, must be positioned in automatic. Long leg of automatic sear 8 spring must rest on top of selector lever. a Install selector lever 7 and automatic sear 8 . b install automatic sear pin 9 into receiver using drive pin punch. Push in until flush. b install automatic sear pin 9 into receiver using drive pin punch. Push in until flush. a Install magazine catch spring 10 and magazine button 11 . b Install magazine catch 12 . Push in on magazine button 1 1 using a...

Short Recoil

M16 Short Gas Tube

Improper gap, space or worn, missing, or broken bolt rings 1 . Replace bolt rings and stagger gaps. Adjust by bending in area of handguards or replace gas tube. Adjust by bending in area of handguards or replace gas tube. Step 3. Gas tube spring pin 3 missing from front sight 4 . Replace spring pin 3 . Step 4. Partially plugged gas system because of carbon buildup in the gas tube 2 . Replace spring pin 3 . Step 4. Partially plugged gas system because of carbon buildup in the gas tube 2...

Notgo Gage

If the 'lower receiver is not disassembled, visual'iy inspect for broken or damaged parts, and insure that the hammer and trigger springs are correctly installed before beginning this test. It is not necessary to disassemble the lower receiver for the sole purpose of this visual inspection. If broken or damaged parts are found, disassemble p 3-50 and repair as authorized. 5. Test two hammer pin holes and two trigger pin holes using not-go plug gage 1 P N 12006472. This test may be conducted by...

Appendix C Repair Parts And Special Tools Listc

Section I Section II Repair Parts Group 0 0 5.56MMRifle M16,8448600 and M16A1, 8448500 Group 01 Bolt carrier assembly 8448501 - 2 0101 Bolt Assembly 8448509 - 3 0102 Key and bolt carrier assembly 8448505 - 4 Group 02 Charging handle assembly 844851 7 - 5 Group 03 Upper receiver and barrel assembly 8448601 M16 and 0301 Rifle barrel assembly 8448663 - 7 0302 Upper receiver assembly 8448602 M16 and 8448523 M16A1 C-8-1 C - 8 030201 Forward assist assembly 9349 - 9 Group 04 Lower receiver and...

Nomenclature Crossreference List

Common Name Official Nomenclature Action Compression Spring 8448629 Bolt Catch Compression Spring 8448633 Key and Bolt Carrier Assembly 8448505 Disconnector Compression Spring 8448594 Extractor Spring Assembly 8448755 Magazine Catch Compression Spring 8448637 Rifle M 16 8448600 or M 16A1 8448500 1-6. REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS EIR . If your rifle needs improvement, let us know. Send us an EIR. You, the user, are the only one who can tell us what you don't like about your...

Weapon Cannot Be Zeroed

M16a1 Bent Barrel

Bent or bulged rifle barrel 1 . Step 2. Barrel assembly out of alignment with rear sight on upper receiver Align barrel and upper receiver p 3-33 . Step 3. Corroded front 2 or rear 3 sights. Disassemble, . clean, . and lubricate. 12. FAILURE TO CYCLE WITH SELECTOR LEVER SET ON AUTO. Step 1. Broken automatic sear 1 or spring 2 Replace automatic sear assembly 1 . Step 2. Faulty selector lever 3 . Replace selector lever 3 . Step 3. Short recoil.

F H D L A

When unserviceable, condemn and dispose of the item at the level of maintenance shown in 3d position of SMR Code. Reparable item. When uneconomically reparable, condemn and dispose of the item at unit or aviation unit level. Reparable item. When uneconomically reparable, condemn and dispose of the item at the direct support or aviation level. Reparable item. When uneconomically reparable, condemn and dispose of the item at the general support. Reparable item. When beyond...

M16 Lower Receiver

Lower Receiver Assembly M16

Lower Receiver and Extension Subassembly M16, 8448605 and M16A1, 8448579. Figure C-14. Lower Receiver and Extension Subassembly M16, 8448605 and M16A1, 8448579. DESCRIPTION AND USABLE ON CODES UOC QTY GROUP 0404 FIG C-14 LOWER RECEIVER AND EXTENSION SUBASSEMBLY M16 8448605 AND M16A1 8448579

Xaffa

Rifle M16. 8448600 and M16A1. 8448500. DESCRIPTION AND USABLE ON CODES UOC QTY GROUP 00 FIG C-1 5.56MM RIFLE M16 8448600 AND M16A1 8448500 BOLT CARRIER ASSEMBLY SEE FIG.C-2 1 FOR BREAKDOWN HANDLE ASSEMBLY, CHARGING SEE FIG 1 C-5 FOR BREAKDOWN ---- UPPER RECEIVER AND BARREL ASSEMBLY, 1 M16, SEE FIG.C-6 FOR BREAKDOWN . . . . UOC 755 UPPER RECEIVER AND BARREL ASSEMBLY, 1 M16A1 SEE FIG.C-6 FOR BREAKDOWN . . . UOC 194 MAGAZINE,CARTRIDGE 1 SLING,SMALL ARMS 1 LOWER RECEIVER AND EXTENSION ASSY, 1 M16...

Warning

Read this manual carefully before performing required maintenance. This manual will be referred to for Inspection Maintenance and Repair procedures. Before starting an inspection, be sure to clear the rifle. Do not actuate the trigger until the rifle has been cleared. Inspect the chamber to ensure that it is empty and no ammunition is in position to be chambered. Do not keep live ammunition near work area. To avoid injury to your eye, use care when removing and installing spring-loaded parts....

Group Fig C Special Tools

TOOL AND GAGE SET DS GS SUPPORT MAINTENANCE FOR 5.56MM RIFLE M16 RIFLE SERIES BOI 2 PER SUPPORTING DSU GSU CASE,CARRYING,GAGE PART OF KIT P N 8426685 M16 ONLY REFLECTOR TOOL, CHAMBER,PART OF KIT P N 8426685 GAGE,PLUG,PLAIN PART OF KIT P N 8426685 GAGE,BARREL,EROSION PART OF KIT P N 8426685 CHROME BARREL GAGE,MUZZLE EROSION PART OF KIT P N 8426685 NON-CHROME BARREL GAGE,STRAIGHTNESS PART OF KIT P N 8426685 CASE,BORE GAGE PART OF KIT P N 8426685 GAGE,HEADSPACE PART OF KIT P N 8426685 GAGE,FIRING...

Failure To Fire

Weak or broken hammer spring 2 . Step 3. Hammer spring 2 improperly assembled. Step 4. Selector lever 3 frozen on SAFE position. step 5. Broken firing pin 4 or firing pin does not meet gage protrusion requirement. Step 6. Damaged, dirty, or corroded spring 5 and detent 6 .

Principles Of Operation

Provides stripping, cambering, locking, firing, extraction, cartridges using the drive springs and projectile propelling gases for power. 0 CHARGING HANDLE ASSEMBLY. Provides initial charging of the weapon. The charging handle latch locks the handle in the forward position during sustained fire to prevent injury to the operator. c UPPER RECEIVER AND BARREL ASSEMBLY. Provides support for the bolt carrier assembly. The barrel chambers the cartridge for firing and...

Ar Firing Pin Pn 12620101

To perform the following tests, disassemble weapon only as far as allowed in chapter 2 Unit Maintenance Instructions , unless a deficiency is uncovered. 2. Perform a general inspection of rifle per chapter 3 Direct Support Maintenance Instructions section V. Repair as required and authorized. 3-22. M16 AND M16A1 RIFLE ANNUAL INSPECTION AND GAGE REQUIREMENTS CONT . 1. Gage bolt assembly for firing pin protrusion using firing pin protrusion gage PN 7799735. See page 3-13, TEST. 2. Gage bolt...