Due to its longer length, this receiver extension is compatible with most DPMS® Gen 1 pattern 7.62×51 firearms with standard length AR15 / M4 carbine buffer components as well as aftermarket A5 buffers and springs for use on 5.56×45 AR15 / M4 platforms.*

Constructed of impact extruded 7075-T6 aluminum with Type III, Class 2 hard coat anodizing for an extremely hard, abrasion resistant surface. The interior of the receiver extension features Everlube® coating for enhanced corrosion resistance and reduced friction and wear. The additional position holes allow for more length-of-pull fitment options.