Brownells BRN AR-15 Rifle Receiver Extension Tube A2 Style

The Brownells BRN AR-15 Rifle Receiver Extension is a precision-manufactured component designed for AR-15 platform rifles. This A2 style receiver extension tube provides the threaded interface between the lower receiver and buttstock assembly. Constructed from high-quality materials with proper military specifications, it ensures reliable function and durability. The receiver extension features standard threading and dimensions for compatibility with mil-spec stocks and buffer assemblies. Essential for completing AR-15 builds or replacing worn components, this tube maintains proper headspace and timing for the buffer spring and buffer system. Compatible with standard AR-15 lower receivers and A2 style stocks.