AR-STONER Extreme Duty Mil-Spec AR-15 Buffer Tube Kit Aluminum Black

The AR-STONER(TM) Extreme Duty 6-Position Buffer Tube Assembly is perfect for upgrading an existing AR-15 to a carbine collapsible stock system, or building a new carbine rifle. This assembly is machined to exacting standards to provide excellent fit, reliable function, and performs in the harshest conditions. Rest assured the high-grade, impact extruded, 7075-T6 aluminum Extreme Duty Buffer Tube will perform in high stress situations when reliability is essential. With a hard coat anodizing, ma