Immedmate Action

If your rifle stops firing, perform the following immediate actions:

CHAMBER

CHAMBER

Charging Handle M16a2 Rifle

1 SLAP upward on magazine to make sure it's properly seated.

Do not load with a hot chamber.

2 PULL charging handle all the way back. OBSERVE ejection of case or cartridge. Check chamber for obstruction.

3 If cartridge or case is ejected or chamber is clear, RELEASE charging handle to feed new round. Don't ride the charging handle foward.

4 TAP forward assist.
Charging Handle M16a2 Rifle
5 Now FIRE. If it won't fire, look for trouble and apply remedial action (next page).

WARNING

If your rifle stops firing with a live round in the chamber of a hot barrel, remove the round fast. However, if you cannot remove it within 10 seconds, remove magazine and wait 15 minutes with the rifle pointing in a safe direction. This way you won't get hurt by a possible round cooking off. Regardless, keep your face away from the ejection port while clearing a hot chamber.

If your rifle still fails to fire after performing steps 1 through 5, check again for jammed cartridge case

If a cartridge case is in the chamber, tap it out with a cleaning rod.

IF YOUR RIFLE STILL FAILS TO FIRE, CHECK TROUBLESHOOTING PAGE 86.

If your rifle still fails to fire after performing steps 1 through 5, check again for jammed cartridge case

WARNING

if an aucSbfe "POP" or reduced RECOfL Ss experienced during firtng, immediately G£A$£ me. m remove the magazine, (2) lodi the bolt to the rear, (3) place the safeS&fl^ver on the "SAFE' position and (4) visually inspect and/or insert a cleaning is not a buJtet stuck in the bore.

DO NOT APPLY IMMEDIATE ACTION.

DO NOT APPLY IMMEDIATE ACTION.

Removing Lodged Bullet

If a bullet is stuck in the barrel of the weapon, DO NOT attempt to remove it. Turn the weapon in to the armorer.

If a bullet is stuck in the barrel of the weapon, DO NOT attempt to remove it. Turn the weapon in to the armorer.

1 Look for fouling in bore and chamber.

1 Look for fouling in bore and chamber.

Remove bolt carrier group (see page 12) and clean carbon and oil from firing pin and all surfaces of bolt/bolt carrier with dry swabs. Clean firing pin hole and bolt carrier key with pipe cleaner. Apply light coating of CLP, paying special attention to slide and cam pin area.

3 "Swab out" rifle from chamber to muzzle.

CAUTION: Don't bend or flex cleaning rod, Make sure swab goes clear through compensator. Do not reverse direction while swab is in bore or compensator.

Be careful not to accidently fire your rifle when inserting gloved fingers into trigger guard area.

EXTREME COLD CLIMATE - ARCTIC: Use LAW for lubrication and CLP for cleaning.* 1 To operate the rifle in extreme cold, depress the trigger guard plunger and open the trigger guard to obtain easy access to the trigger when wearing arctic mittens.

2 Cleaning and lubrication should be accomplished inside a warm room and the rifle should be at room temperature if possible.

a. Apply a light coat of LAW to all functional parts. *CLP must be kept warm in extreme cold. Carry it in your shirt pocket to keep it fluid.

CAUTION

b. To Prevent the condensation of moisture and freezing, keep the weapon covered when meting from a warm to a cold area to allow gradual coding.

c. Always attempt to keep the weapon dry.

d. Unload and hand function the weapon every 30 minutes to help prevent freezing of functional parts.

e. Do not lay a warm weapon directly in snow or ice.

f. When moving a cold rifle into a warm place, condensation (moisture) will form in and on your weapon. If possible, leave your weapon in a protected but cold area outside. When the weapon is brought inside a warm place, it should be disassembled and wiped dry several times as it reaches room temperature.

g. Keep the insides of magazines and your ammo wiped dry. Moisture will freeze and cause malfunctions. Do not lube the ammo.

h. The use of the muzzle cap, protective magazine bag, and an overall rifle cover will help protect your rifle. Use them whenever the tactical situation permits.

i. For extended operations in extreme cold, have armorer remove trigger guard.

HOT, WET CLIMATE - JUNGLE: Use CLP to clean and lube.

1 Perform normal maintenance as outlined in the PMCS table on page 44.

2 Clean and lube rifle more frequently. Inspect hidden surfaces of the bolt and carrier assembly, upper receiver and chamber/barrel extension (locking lugs), and the lower receiver and receiver extension assembly (buffer tube) for corrosion. Also pay close attention to the spring-loaded detents on the rifle.

3 To help prevent corrosion, remove handprints with a dry wiping rag. Then lubricate lightly with CLP.

4 Unload and check the inside of magazines frequently for corrosion and moisture. Wipe ammo dry before reloading.

5 Use magazine bag, muzzle cap, etc. for protection when the tactical situation permits.

HOT, DRY CLIMATE - DESERT: Use CLP to clean and lube.

Hot, dry climates are usually areas containing blowing sand and fine dust. Deserts can be hot during daylight hours and freezing during hours of darkness. Consequently, this harsh environment will severely tax your rifle as well as all other types of equipment. Your rifle's continued operation will depend on your detailed cleaning and lubricating procedures.

1 Dust and sand will get into the rifle and magazines. This will cause malfunctions. Give the inside areas and functional parts of the rifle a thorough cleaning everyday and after every firing mission.

2 Corrosion is less likely to form on metal parts in a dry climate; therefore, lubrication should be applied to the internal working surfaces and functional parts only. Use normal amounts of CLP for lubrication (always shake CLP prior to use). Unload and dry ammo and inside of magazines daily. Do not lube magazines.

3 The use of overall rifle protection cover, muzzle cap, and spare magazine protective bags will help protect the rifle/ammo from sand and dust. Use these items when the tactical situation permits.

4 At all times, however, as a minimum effort to help keep out sand and dust, keep the bolt and ejection port cover closed, a magazine installed in the rifle, and a muzzle capon the muzzle.

NOTE: Removal of the muzzle cap prior to firing is recommended. Place it in your pocket for future use. However, it is not dangerous to fire the rifle with the muzzle cap installed.

HEAVY RAIN AND FORDING OPERATIONS - ALL CLIMATES

1 Perform maintenance in accordance with the appropriate climate conditions.

2 Always attempt to keep rifle dry.

3 Use rifle cover, muzzle cap, and protective bags to protect rifle, ammo, and magazines.

4 Always drain any water from barrel prior to firing. Dry the bore with a swab and cleaning rod if it is wet.

NUCLEAR, BIOLOGICAL AND CHEMICAL (NBC). General procedures can be found in FM 3437, FM 21-40 and TM 3-220.

AFTER FORDING

WARNING

DO NOT FIRE RIFLE IF WATER IS PRESENT IN BARREL.

AFTER YOU REMOVE THE CAP:

1 REMOVE MUZZLE CAP.

1 REMOVE MUZZLE CAP.

2 POINT THE MUZZLE DOWN AND SHAKE VIGOROUSLY.

AFTER FORDING (CONT)

AFTER FORDING (CONT)

NOTE: For additional information. see FM 23-9

PROBLEM

CHECK FOR

WHAT TO DO

WONT FIRE

Selector lever on SAFE.

Improper assembly of firing pin.

Put it on SEMI or BURST. Assemble correctly.

RETAINING PIN GOES IN BACK OF LARGE SHOULDER OF FIRING PIN.

Too much oil in firing pin recess.

Put it on SEMI or BURST. Assemble correctly.

RETAINING PIN GOES IN BACK OF LARGE SHOULDER OF FIRING PIN.

Bolt Chamber M16a2

Wipe out with pipe cleaner,

Defective ammo.

Too much carbon on firing pin or in firing pin recess.

Remove and discard Clean.

PROBLEM

CHECK FOR

WHAT TO DO

BOLT WON'T UNLOCK

Dirty or burred bolt.

See your NCO or your unit ARMORER.

WONT EXTRACT Broken extractor spring. See your ARMORER. Dirty or corroded ammo. Remove.

Push out stuck round with cleaning rod.

Carbon in chamber. Fouling or carbon in extractor recess or lip.

Clean chamber. Clean.

Clean chamber. Clean.

PROBLEM

CHECK FOR

WHAT TO DO

WON'T FEED Dirty or corroded ammo. Clean.

Dirty magazine. Clean.

Defective magazine. Replace. Too many rounds in Take out excess. magazine.

Action of buffer assembly Take out buffer and spring and clean. is restricted,

Magazine not fully seated.

PRESS BUTTON ON RIGHT SIDE

Adjust magazine catch.

Adjust magazine catch.

PROBLEM

CHECK FOR

WHAT TO DO

WON'T FEED (CONT)

Turn catch clockwise to tighten and counterclockwise to loosen. \

TURN CATCH ON LEFT SIDE

DOUBLE FEED

Defective magazine.

Replace.

PROBLEM

CHECK FOR

WHAT TO DO

WON'T CHAMBER Dirty or corroded ammo. Clean.

Damaged ammo. Replace

Carbon in chamber or on gas tube.

Dirt, corrosion, or carbon Clean lugs buildup in barrel locking lugs.

CLEAN

WON'T EXTRACT Frozen extractor. Remove and clean.

Restricted buffer Remove and clean.

assembly.

Restricted movement of Remove, clean, and lube. (Before putting bolt bolt carrier group. back in, make sure gas tube fits into carrier key and that the carrier moves freely.)

PROBLEM_CHECK FOR_WHAT TO DO_

SHORT RECOIL Gaps in bolt rings (not Stagger ring gaps. staggered).

Carbon or dirt in carrier Clean. key or on outside of gas tube.

PROBLEM

CHECK FOR Q-Tip/pipe cleaner stuck inside carrier key.

WHAT TO DO Return rifle to armorer.

CHECK FOR Q-Tip/pipe cleaner stuck inside carrier key.

BOLT FAILS TO LOCK AFTER LAST ROUND

SELECTOR LEVER BINDS

Dirty or corroded bolt latch.

Faulty magazine. Needs oil.

Clean. Replace.

Lubricate with CLP.

Dirt or sand under trigger. Clean.

BOLT CARRIER "HANG UP"

Round jammed between 1 Remove magazine.

bolt and charging handle 2 push in on the bottom of the bolt latch, and/or double feed.

WARNING

KEEP CLEAR OF MUZZLE.

3 Bang rifle butt on the ground. Bolt should lock to rear.

CAUTION

After round is removed, bolt is under tension.

4 While bolt is held to rear, round should fall through magazine well.

4 While bolt is held to rear, round should fall through magazine well.

NOTE

If this procedure fails, use a section of cleaning rod to push bolt fully to rear through ejection port.

CAUTION

DO NOT remove the compensator for any reason. Armorers are not authorized to remove it for cleaning puposes. The compensator is torqued to about 20 pounds with a special wrench at the factory.

The compensator was set at the factory. It leeps the muzzle down during automatic fire. The setting is precise so that the slots are indexed, as shown below.

The compensator has five slots. The third or middle slot must be straight up.

5.56mm NATO

5.56mm NATO

It should line up with the front sight post.

CAUTION

DO NOT remove the stock or the pistol grip for any reason. You are not authorized to remove these parts because you may lose the small detents or damage the springs upon reassembly. If, for example, your rifle is submerged during a river crossing, ask your armorer to remove the stock or pistol grip for cleaning and lubricating.

NOTE

Buttstock mat be used for storage.

M16a2 Disassembly Mat

The magazine may be loaded quickly using ten-round stripper clips and the magazine filler found in each bandoleer.

TEN-ROUND STRIPPER CLIP

1 With the magazine filler in place, place a ten-round stripper clip in position. Using thumb pressure on the rear of the top cartridge, press down firmly until all ten rounds are below the feed lips of the magazine.

TEN-ROUND STRIPPER CLIP

MAGAZINE FILLER (FOUND IN END POCKET OF BANDOLEER)

Remove the empty stripper clip while holding the magazine filler in place. Repeat until three ten-round clips are loaded.

Remove magazine filler and retain it for future use.

LOADING PROCEDURE

Use tracer ammunition to help hit the target during hours of darkness or low light levels. Tracer ammunition is not as effective as regular ball ammunition against most targets.

When tracer ammunition is available, mix it in with the ball ammunition in your magazine. One way to mix ammunition is shown below.

TOP THREE TRACER

TRACER

TRACER

TRACER

BOTTOM FOUR TRACER

TOP THREE TRACER

TRACER

TRACER

TRACER

BOTTOM FOUR TRACER

NOTE

Tracer ammunition is tipped

The top three help you get on target.

The traces in between help you stay on target.

The bottom four let you know when to change magazines.

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