AR-STONER AR-15 Pistol Kit 5" Barrel 5.56x45mm NATO Short Buffer System

Overview

The AR-STONER AR-15 Pistol Kit provides style, function, and versatility for your AR-15 platform. Featuring a 5.56x45mm NATO caliber and a 5-inch barrel, the A3 upper receiver attaches to virtually any standard AR-15 lower receiver and is machined with M4 feed ramps and an M-Lok handguard. The M-Lok slots allow direct mounting of compatible accessories without sacrificing strength or ergonomics. This kit includes a pistol buffer tube assembly machined from 6061-T6 aluminum with a hard coat anodized finish, paired with a short recoil buffer, buffer spring, castle nut, and end plate. Also included is a complete lower parts kit (excluding the stripped lower receiver), which contains standard military-specification components such as a trigger, hammer, safety selector, bolt catch, takedown and pivot pins, magazine catch, A2 pistol grip, and associated springs, pins, and detents.

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