AR-STONER 9mm AR-15 Magazine Adapter Block

The AR-STONER(TM) 9mm Magazine Adapter Block for the AR-15 platform converts your standard lower to accept 9mm rounds. The anodized aluminum, 9mm mag block with steel insert for feed ramp, accepts Colt style 9mm magazines. Installation is quick and easy. Use a 1/16 and a 5/64 (not included) hex key on the the provided screws to lock down and secure this mag block. Building a pistol-caliber carbine or extending your day at the range is now easier and more cost effective with the addition of the