AR15 Torques & Specs

 

Torque Values:
Compensator (Flash hider)  15-20 Ft. Lbs.

Barrel Nut - 30 Ft. lbs. Minimum, not to exceed 80 Ft. Lbs. to align the next slot in the barrel nut.

Carrier Key Screws - 35-40 INCH pounds.

Lower Receiver Extension (Buffer Tube)
Rifle: 35-39 Ft. Lbs.
Carbine: Tighten the castle nut to 40 INCH pounds +/- 2 inch pounds.

 

Head space information FOR 5.56

New barrel Headspace: GO gauge 1.4636

NO GO guage 1.4696

field/Unsafe barrel Headspace: 1.4730-1.4736"



 

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