Surplus AR-15 / M16 9MM Magazine Adapter Block For Colt 9mm SMG Magazines****This is a surplus item. Some surface blemishes may be present. Take care not to strip the set screws when locking the adapter into place. COLT STYLE MAGAZINES ONLY**** 9mm AR-15 MagWell Adaptor for Colt style magazines. This USA Made adapter allows for easy conversion from any standard .223/5.56 lower receiver to 9mm. The easy drop in design installs in minutes, with no gunsmithing or permanent modifications needed to the lower receiver.Last round bolt hold openSteel feed rampsInstalls from the bottom of the magwell with top and bottom locking Screws/li>No dissassembly of the bolt catch requiredFits Colt SMG and Uzi Style MagsT-6061 black anodized aluminum bodySteel feed ramp and ejectorNet weight: 4.3 ozInstallation:Remove screw and washer that is pre-installed next to the ejectorFeed the magwell like a regular magazine into the mag wellAfter locking into the lower, re-install the washer and screwThen use the provided Screws(2) and hex key to set the block into place from the bottomSKU:SURP-9MM-ADUPC:Explore more JSE Surplus Magazines gun parts.