Faxon AR-15 ARAK-21 Complete Upper Receiver 7.62x39mm NATO 12.5" Barrel

Overview

The Faxon ARAK-21 is a complete upper receiver assembly designed for the AR-15 platform, featuring a 12.5" barrel chambered in 7.62x39mm. It utilizes a long-stroke, gas-piston-actuated system with a four-position adjustable gas regulator, including a setting for single-shot operation. The receiver is machined from 6061-T6 billet aluminum and includes a full-length Mil-STD-1913 Picatinny rail on top and three additional rails at the muzzle end. Other features include an ambidextrous, non-reciprocating charging handle, an eight-lug bolt design, and a Muzzlok muzzle device. The assembly has a nitride-finished steel barrel with a 1:8" twist rate and is compatible with standard AR-15 lowers via take-down and pivot pins. The package includes the bolt carrier assembly, recoil spring system, owners manual, and required hex wrenches.

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