Help Center

User Manual

Facts about your Bushmaster .308 rifle…

The Bushmaster .308 rifle consists of a rifle and a magazine. It is a gas operated, air-cooled, magazine-fed, shoulder-fired weapon that can be fired in a semi-automatic mode – i.e., a single shot each time the trigger is pulled.

  • The upper receiver and barrel assembly have a fully adjustable rear sight. (flat-top version does not).
  • The upper and lower receivers are easily opened for cleaning and inspection.
  • The bolt group and barrel extension are designed with locking lugs that lock the bolt group to the barrel extension.
  • The forged aluminum upper and lower receivers reduce the weight of the rifle.
  • Caliber: .308 Winchester / 7.62 mm NATO.
  • Weight: (depends upon model) 20” Bbl. Rifle = 9.57 Ibs. / 4.35 kg.
  • Length: (depends upon model) 20” Bbl. Rifle = 42.75” / 108.5cm.
  • Barrel Rifling: R.H. twist; 1 turn in 10”; 4 lands & grooves.
  • Firing characteristics: muzzle velocity approx. 2,700 fps; chamber pressure 62,000 psi.
  • Maximum effective rate of fire: 45 rounds per min. / semi-automatic.
  • Max effective range: 1000 meters (individual / point targets).
  • Maximum range: 3754 meters.

BEFORE USING THIS FIREARM, READ AND FOLLOW THESE INSTRUCTIONS.
If there is anything you do not understand, get help from someone qualified in the safe handling of firearms.

Rifle parts and where to find them…

308_bbl_flat_top_4.png

Pictured here is a 20” Bbl. flat top rifle

Rifle parts and where to find them (left side)…

308_left_side_5.png

Pictured here is an A2 type 16” Bbl. carbine

Clearing Your Rifle…

  1. POINT RIFLE IN A SAFE DIRECTION!
    Place safety selector lever on SAFE. (If the rifle is not cocked, the selector lever cannot be pointed toward SAFE.)
    308_step1_5.png
  2. Press magazine catch button, and pull magazine down to remove.
    308_step2_5.png
  3. To lock bolt open, pull charging handle rearward. Press up on bolt catch, and allow bolt to move forward. If you haven't before, place safety selector lever on SAFE.
    308_step3_5.png
  4. Check receiver and chamber to ensure there is no ammunition in the rifle.
    308_step4_5.png
  5. With selector lever pointing toward SAFE, allow bolt to go forward by pressing down on bolt catch button.

Disassembling your rifle…

  1. Clear your rifle and disconnect the sling.
  2. Push in takedown pin as far as it will go. Pivot upper receiver away from lower.
    308_step2_6.png
  3. Push in front pivot pin.
    308_step3_6.png
  4. Separate upper and lower receivers.
  5. Pull back charging handle and bolt carrier.
    308_step5_6.png
  6. Remove bolt carrier and bolt.
    308_step6_6.png
  7. Remove charging handle by pulling back and up.
    308_step7_6.png
  8. Remove firing pin retaining pin.
    308_step8_6.png
    DO NOT OPEN OR CLOSE Split End of Firing Pin Retaining pin!
    308_firing_pin_6.png
  9. Push bolt in to locked position.
    308_step9_7.png
  10. Drop firing pin out from rear of bolt carrier.
    308_step10_7.png
  11. Remove bolt cam pin.
    308_step11_7.png
  12. Remove bolt assembly from carrier.
    308_step12_7.png

Disassemble using steps 13 through 16, only when dirty or damaged!

  1. Remove extractor pin by pushing out with a drift punch. You may need to use a small hammer to drive the pin out.
    308_step13_7.png
  2. Remove extractor plunger, and spring.
    308_step14_7.png
    CAUTION: Extractor spring may pop out and get lost!
  3. Press in buffer, depress retainer, and release buffer.
    308_step15_8.png
  4. Remove buffer and buffer spring.
    308_step16_8.png

The handguards may be disassembled at any point in your cleaning procedures as necessary (see “Buddy System” instructions). If your rifle is equipped with the A3 Type removable carry handle, that may be removed for cleaning by loosening the 2 thumb nuts. Clean as per instructions for aluminum upper and lower receivers. Lightly lubricate the thumb nut threads and the rear sight mechanism.

308_stop_sign_8.png

You must to post a comment.