If you have been waiting for a way to attach an AR (Mil Spec/Commercial) stock to your Cobray semi auto, this is for you! CNC cut, this two piece design is built from the same aluminum as most AR receivers. It has a custom designed inner rear spring spacer that replaces the OEM part. This allows the bracket to be bolted to the gun and improve strength. The adapter is finished is jet black anodize and comes complete with threaded insert, allen wrench and instructions on installation. Call for questions. (Adapter only, gun & other parts sold separately) NFA rules apply, Addition of this item may require additional paperwork to be filed with the ATF, check with your local dealers. FLAT/MATTE black finish shown in photos #2,3,4,&5.