Manual

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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.
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Safety Function Checks 29
Loading a Magazine • Forward Assist 30
Adjustable Front Sight Post 31
Zeroing Your Sights 32
Zeroing Adjustments 33
25 Meter Zeroing Procedure 34
Operation of Your Rifle 35
Operation • Inserting a Magazine 36
Operation • Chambering a Round 37
Immediate Action in Case of Trouble 39
Remedial Action 41
Bullet Stuck in the Bore 42
Troubleshooting 43
Disassembly Views 51
Limited Warranty
Owners Information
Before Using This Firearm 1
Warnings 2
Facts About Your Bushmaster .308 3
Rifle Parts and Where To Find Them 5
Clearing Your Rifle 7
Disassembling Your Rifle 9
Cleaning • Inspection • Lubrication 14
Detailed Cleaning Techniques 15
Cleaning the Upper Lower Receivers 17
Cleaning the Ejector 18
Inspection before Lubrication 19
Lubrication of Upper & Lower Receivers 20
Lubrication of Bolt Carrier Group 21
Lubrication of Adjustable Rear Sight 22
Reassembly 23
Table of Contents
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.