Symptom Index

Failure of magazine to lock in Failure to feed Failure to Failure to Failure to Failure to Failure to Failure to Failure to Short Weapon cannot be Failure to cycle with selector lever set on Fires when trigger is released with selector lever on SEMI, or fires two or more rounds in SEMI selector position Fires with selector lever on Bolt fails to lock to rear after firing last

Bolt Fails To Lock To Rear After Firing Last Round

Magazine follower (1) worn or broken Replace magazine. Step 2. Magazine spring (2) weak or broken. Replace magazine. Step 3. Magazine feeder lips (3) bent or broken, Replace magazine. Step 4. Magazine follower (1) binds during operation Replace magazine. Step 5. Broken bolt catch (4) and or spring, Evacuate to direct support maintenance.

Explantion Of Columns Sections Ii And

Indicates the number used to identify items called out in the illustration. b. SMR Code (Column (2)). The Source, Maintenance, and Recoverability (SMR) code is a 5-position code containing supply requisitioning information, maintenance level authorization criteria, and disposition instructions, as shown in the following breakout. Who can install replace or use the item Who can do complete repair* on the item Who determines disposition action on unserviceable item...

How To Locate Repair Parts

When National Stock Number or Part Number is Not Known. (1) First. Using the table of contents, determine the assembly group or subassembly group to which the item belongs. This is necessary since figures are prepared for assembly groups and subassembly groups, and listings are divided into the same groups. (2) Second. Find the figure covering the assembly group or subassembly group to which the item belongs. (3) Third. Identify the item on the figure and note the item number. (4) Fourth....

Caution

Extreme care must be exercised during the following procedure to assure that the striking force is not directed to the attaching screws and that the tube portion is not enlarged or flared beyond original requirement. Such enlargement would permit loss of gas pressure when the key and gas tube come together during function operation. Straighten small dents and or distortions in carrier key (1) using fabricated key tool (8) as follows (a) Place the key and bolt carrier assembly (6) in a vertical...

Chapter Overview

This chapter contains information and instructions to help keep the weapon in good repair. The chapter contains a. Repair Parts, Special Tools, TMDE, and Support Equipment c. Preventive Maintenance Checks and Services (PMCS) e. Decontamination of Rifles and Arms Rooms Section 1. REPAIR PARTS, SPECIAL TOOLS, TMDE, AND SUPPORT EQUIPMENT 2-1. COMMON TOOLS AND EQUIPMENT. For authorized common tools and equipment refer to the Modified Table of Organization and Equipment (MTOE) applicable to your...

Corrective Action

FAILURE OF MAGAZINE TO LOCK IN WEAPON. Step 1. Dirty or corroded magazine catch (1). Disassemble and clean. Step 2. Defective magazine catch spring (2). Replace spring (2). Step 3. Worn or broken magazine catch (1). Replace magazine catch (1). Step 1. Magazine catch spring (1) weak or broken. Evacuate to direct support maintenance. Step 2. Magazine catch (2) defective. Evacuate to direct support maintenance. Step 3. Magazine catch (2) out of adjustment (will not retain magazine). Step 4....

Critical Area

Under the following conditions, hairline cracks originating from buttplate end of buttstock are acceptable. No chipped away material is allowed. (1) One hairline crack, not to exceed one inch in length, per side of buttstock. (2) Two additional hairline cracks up to .22 inch in length, per side of buttstock. (3) A total of three cracks per side of buttstock, originating from buttplate end, are allowable. Buttstocks with unauthorized markings stamped into their surfaces will be replaced....

Equipment Data

Rifle M16, without magazine and Rifle M16A1, without magazine and sling lb Sling Empty Rifle M16, w sling and loaded magazine lb Rifle M16A1 w sling and loaded magazine lb Bayonet-Knife Scabbard M10 Rifle w flash suppressor 39.625 in. Barrel Rifling - RH twist, 6 grooves, 1 turn in 12 inches Method of operation Typeof breech Method of feeding Cooling Cyclic rate of fire (approximate) 800 rds m 45 65 rds m 150 200 rds m Bipod Section III. PRINCIPLES OF OPERATION 1-11. GENERAL. The 5.56mm M16...

Failure To Lock

Dirty or damaged ammunition (1). Replace ammunition. Step 2. Bolt cam pin (2) broken or missing. Replace bolt cam pin (p 2-24). Step 3. Loose or damaged bolt carrier key (3) Evacuate to direct support maintenance Dented carrier keys (3) may be repaired (p 2-22) using the fabricated (fig E-3, app E). Step 4. Improperly assembled extractor (4) to extractor (5). Adjust bend gas tube in area of the handguard to its original configuration. If the gas tube cannot be repaired to its original...

General

This section contains troubleshooting information for locating and correcting most of the operating troubles which may develop in the 5.56mm Rifle M16 and M16A1, Each malfunction for the individual part or assembly is followed by a list of tests or inspections which will help you to determine the corrective actions to take. You should perform the tests, inspections and corrective actions in the order listed. b. This manual cannot list all malfunctions that may occur, nor all tests or...

Info

M16 Nomenclature

TM 9-1005-249-10 (Operator's manual) Small Arms Repairman Tool Kit. SC 5 180-95-CL-A07 (19204) Cleaner, lubricant and preservative (CLP) (item 9. app D) Cleaning compound, rifle bore (RBC) (item 1 1, app D) Lubricating oil, weapons (LAW) (item 20, app D) Lubricating oil, weapons (LSA) (item 21, app D) Do not interchange bolt assemblies from one weapon to another. Doing so may result in injury to, or death of, personnel. To avoid injury to your eyes, use care when removing and installing...

Initial Setup

TM 9-1005-249-10 (operator's manual) Before starting an inspection, be sure to clear the weapon. Do not keep live ammunition near the work area. To avoid injury to your eyes, use care when removing and installing spring-loaded parts. Before starting an inspection on a weapon equipped with a low light level sight, check for damage to the sight and decontaminate if required. See procedures on page 2-21. Below direct support maintenance, do not interchange bolt assemblies from one weapon to...

Location And Description Of Major Components

Provides a means of charging the weapon. BOLT CARRIER ASSEMBLY. Carries bolt to chamber and fires the weapon. Contains the firing pin, extractor, bolt, ejector, and cam pin. UPPER RECEIVER AND BARREL ASSEMBLY. Rifle barrel assembly is air-cooled, contains flash suppressor and front sight assembly, and holds the two hand guards and the sling swivel. Upper receiver contains rear sight, ejection port and cover, and a housing for the bolt carrier and bolt assembly. A...

Maintenance Procedures

Army personnel use chapter two for unit maintenance procedures and chapter three for direct support maintenance procedures. Air Force personnel Only Air Force Specialty Code 753XX Combat Arms Training and Maintenance (CATM) specialists, technicians, and gunsmiths are authorized to perform maintenance procedures contained in this manual. Each maintenance task has an initial setup containing a list of the following things you will need in order to do your maintenance task 1. Tools and Special...

Note

During periods of inactivity, perform preventive maintenance quarterly unless inspection reveals more frequent servicing is necessary. An inactive weapon is a weapon which has been stored in an arms room for a period of 90 days without use. The weapon may or may not have been assigned to an individual. Normal cleaning (PMCS) of an inactive weapon will be performed every 90 days. Should the unit armorer detect corrosion on a weapon prior to the end of the 90-day period, the PMCS should be...

Recommended Changes To Publications And Blank Forms

For of ihia form, torn AR 310-1 th* proponent ageney it the US Use Part It (reverse) for Repair Parts and Special Too Lists (RPSTL) and Supply Catalogs Supply Manuals (SC. SM). TO (Forward to proponent oI publication or lorm) (Includa ZIP Coda) PROM (Activity and location) (Includa ZIP Cods) PART I ALL PUBLICATIONS (EXCEPT RPSTL AND SC. SM) AND BLANK FORMS

Warning

Before starting an inspection, be sure to clear the weapon. Do not keep live ammunition near the work area. a. General. The PMCS procedures are contained in the table following. They are arranged in logical sequence requiring a minimum amount of time and motion on the part of the persons performing them and are arranged so that there will be a minimum interference between persons performing checks simultaneously on the same end item. b. Item No. Column. Checks and services are numbered in...

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...

Patricia P Hickerson

Brigadier General, United States Army The Adjutant General By Order of the Secretary of the Air Force MERRILL A. McPEAK, General USAF Chief of Staff CHARLES C. McDONALD, General, USAF Commander, Air Force Logistics Command W.T. LELAND, Rear Admiral Chief, Office Law Enforcement and Defense Operations U.S. Coast Guard To be distributed in accordance with DA Form 12-40E, Block 0136 , Unit, Direct and General Support Maintenance requirements for TM 9-1005-249-23 amp P. U.S. Government Printing...

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...

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...

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...

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

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...

Section I Introduction

This RPSTL lists and authorizes spares and repair parts special tools special test, measurement, and diagnostic equipment TMDE and other special support equipment required for performance of unit and direct support maintenance of the rifle. It authorizes the requisitioning, issue, and disposition of spares, repair parts, and special tools indicated by the Source, Maintenance, and Recoverability SMR codes. C-2. GENERAL. In addition to Section I, Introduction, this Repair Parts and...

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...