Adams Arms AR15 Kit for 223/5.56 - Carbine Length Gas
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Adams Arms AR15 Kit for 223/5.56 - Carbine Length Gas w/ Adjustable Gas Block
The Adams Arms Piston System:
This system requires a carbine gas length (7.866" from barrel extension to shoulder) and a .750" gas seat.
We recommend using a standard barrel nut or barrel nut with similar measurements for proper fit and function of the kit. Many aftermarket proprietary barrel nuts do not offer the clearance for the drive rod or proper seating of the spring and bushing.