Strike Industries AR-15 Mil-Spec Advanced Receiver Extension

The Strike Industries AR-15 Mil-Spec Advanced Receiver Extension gives your AR-15 an updated aesthetic and increases functionality. Scalloped surfaces reduce friction with tighter-fitting stocks and provide weight savings while retaining mass in critical stress areas. This 7-position buffer tube is constructed from 7075-T6 aluminum and is compatible with Mil-Spec upper receivers. Compatible with rifle-length buffers or rifle-length springs. Does NOT work with the A5 buffer system.