Object 9

Designation: "Object 9"

Caliber: 7.62x51mm

Barrel Length: 12" (ballistics similar to G3KA4)

Materials: Aluminum construction (steel barrel & internals) w/ bakelite furniture

Operation: Long stroke piston

Features: Standard compensator on threaded barrel, left-folding stock (release button near pistol grip on right side), adjustable butt (release button near sling loop), bolt catch inside trigger guard.

Sights: Iron sights only. No provision for optics. (Top is an anti-glare serration, not a rail.)

Controls: Paddle mag release behind magwell, non-reciprocating charging handle at upper front left position, can be switched to right side. Fire selector on left side, above pistol grip (positions: 0,1,A).
 
Takedown: Use a cartridge or something to depress the button between stock & rear sight. Pop the upper receiver up. It's held in place by pressure from the recoil spring.