Barrett M468 Manual.pdf

Responsibility

This manual provides instructions on the operation and maintenance of the Barrett model

M468 rifle. Read and understand it carefully before you try to use your rifle. Your

safety, and that of those around you, depends on your knowledge of your rifle and on your

knowledge of safety rules common to all firearms. Please study the common-sense safety

rules noted in this manual. Your first concern as a gun owner should always be safety.

As a gun owner the security of your rifle is your responsibility. Make sure that your rifle

remains in responsible hands… yours! Don’t become involuntarily associated with it in a

crime or tragedy: make sure your rifle is properly secured. Lock it in a secure storage

container, or if none is available, remove the bolt carrier assembly and store it separately.

WARNING

When not actually shooting your rifle, to avoid accidental firing, be sure the ammunition in

the rifle is unloaded . Failure to do so could result is serious injury or death.

Be sure the cam pin is installed in the bolt group. If it isn’t, your rifle can still fire and will

explode causing injury.

Do not exchange or switch bolt assemblies from one rifle into another. It could cause

damage to both you and your rifle.

Don’t overheat your barrel. Sustained firing of the M468 will rapidly raise the temperature

of the barrel to a critical point.

Firing 140 rounds, rapidly and continuously, will raise the temperature of the barrel to

cookoff point . At this temperature, any live round remaining in the chamber for any reason

may detonate (cookoff) in as short a period as 10 seconds.

If the cookoff point is felt to be possible clear your rifle and allow it to cool.

Sustained rate of fire for the M468 rifle is 12-15 rounds per minute. This is the actual rate of

fire this rifle can continue to deliver for an indefinite length of time without overheating.

Sustained rate of fire should never be exceeded except under circumstances of extreme

urgency.

If there is water or any obstruction in the barrel, do not fire the rifle. It could explode.

If you experience a noticeable difference in sound or recoil, stop firing . Either condition

could indicate an incomplete propellant burn, and a bullet still in the bore. Retract bolt slowly

and remove fired cartridge case. Clear rifle and check for unburned powder grains in the

receiver or bore and for a bullet in the bore. Remove unburned propellant or bullet from the

bore before resuming firing or barrel could explode. If bullet is lodged in bore, take your rifle

to a qualified gunsmith.

Use only authorized ammunition manufactured to U.S. specifications.

Do not mistake the 6.8 round with the .223/5.56 round. Firing the wrong caliber ammunition

could result in the rifle exploding, possibly causing injury to yourself. Do not use or confuse

yourself with any 5.56 components. Do not mix 5.56 magazines, muzzle brakes, flash

hiders, sound suppressors, or blank firing attachments. Be aware that a simple mixing of

components can result in rifle damage and personal injury.

Use of improper ammunition will invalidate your warranty.

Fundamental Rules For Safe Rifle Handling

Always keep the rifle pointed in a safe direction.

Never load the gun until ready to use.

Keep your finger off the trigger until ready to shoot.

Notice

Barrett Firearms Manufacturing, Inc. (B.F.M.I.) has no control over the use of your rifle, and

shall not be responsible for injury, death, or damage to property resulting from either

intentional or accidental discharge of this firearm, or for its function when used for purposes

or subjected to treatment for which it was not intended. B.F.M.I. will not honor claims under

the warranty which result from careless or improper handling, unauthorized adjustments or

part replacement, corrosion, neglect, use of the wrong type caliber of ammunition, or the use

of ammunition that is not original, high quality commercially manufactured and in good

condition, or any combination thereof. B.F.M.I. will not honor claims under the warranty for

any reason or cause when second or subsequent owners make such claims.

ABOUT YOUR M468 RIFLE

Caliber: 6.8 mm SPC – 6.8 x 43 mm

Weight: W/30 round mag 4.37 Kg (9.62 lb) approx

Length: Rifle w/muzzle brake 35 3/8 inches

Mechanical features: Rifling (RH 1/10 twist)

Firing Characteristics: Muzzle velocity (approx) 2,650 fps

Cyclic rate of fire (approx) 750 rounds per min

Max effective rates of fire: Semi: 45 rounds per min

Auto: 90 rounds per min

Sustained rate of fire: 12/15 rounds per min

Max effective range : 600 meters (individual/point targets)

800 meters (area targets)

OPERATING INSTRUCTIONS

Description and Use of OperatorÔs Controls and Indicators

MECHANICAL CONTROLS

REAR SIGHT (1) – zeroes rifle and engages targets to 460 meters.

MUZZLE BRAKE (2) – reduces amount of recoil when rifle is fired.

EJECTION PORT COVER (3) – protects upper receiver from foreign matter when rifle is not

in use. Keep port cover closed when not in use.

CARTRIDGE MAGAZINE (4) – supplies ammunition to the rifle.

MAGAZINE CATCH BUTTON (5) – releases cartridge magazine (4) from rifle when it is

depressed.

LOWER RECEIVER AND EXTENSION ASSEMBLY (6) – provides firing control for the rifle.

FORWARD ASSIST ASSEMBLY (7) – ensures that bolt is fully forward and locked.

SHOULDER GUN STOCK ASSEMBLY (8) – stabilizes rifle and with the standard buttstock,

provides storage for basic cleaning materials.

CHARGING HANDLE ASSEMBLY (9) – cocks rifle when preparing to fire or when clearing

rifle.

FRONT SIGHT (10) – adjustable for elevation.

SELECTOR SWITCH (11) – arms the rifle (in semi or auto) or safes the rifle.

TRIGGER (12) – controls the firing of the rifle.

BOLT CATCH (13) – automatically retains carrier assembly to rear after firing last shot. Can

also be manually engaged.

BARREL ASSEMBLY (14) – directs the projectile upon firing.

OPERATING PROCEDURES

1. LOADING

WARNING

Point muzzle in a safe direction.

Note:

The hammer must be cocked in order for the selector switch to be placed on “SAFE”.

To cock hammer and hold bolt open;

To cock and allow bolt to close;

1.Pull charging handle assembly (1) rearward,

depress bottom of bolt catch (3), and manually

return charging handle. Place selector switch

(2) on SAFE.

2. Pull charging handle assembly (1)

rearward and check to see that chamber is

clear. Release charging handle assembly.

Place selector switch (2) on SAFE.

Insert loaded magazine (3) into rifle’s magazine well until magazine catch (4) engages and

holds cartridge magazine. Tap upward to make sure cartridge magazine is seated correctly.

Note:

Magazine may be inserted with bolt assembly open or closed

2. CHAMBERING AND FIRING A ROUND

2.A. BOLT ASSEMBLY OPEN METHOD

1. Depress upper portion of bolt catch

(1) to release the bolt.

2. Tap forward assist assembly (2) to

ensure bolt is fully forward and locked.

3. Move selector switch (3) to FIRE.

4. Squeeze the trigger (4) and fire.

2.B. BOLT ASSEMBLY CLOSED METHOD

1. Pull the charging handle assembly (1) to

the rear, until it stops.

2. Release the charging handle assembly.

3. Never “ride” the charging handle

assembly (1). Let it go on its own.

4. Tap forward assist assembly (2) to

ensure bolt is fully forward and locked.

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