The AR-STONER Competition Lower Receiver Parts Kit for the AR-15 platform is the perfect choice if you are looking to build your next AR-15. This kit includes all the standard mil-spec parts used in an AR-15 lower receiver to ensure smooth and reliable operation with some Magpul parts. The AR-STONER Duty lower parts kits offers the rugged reliability of AR-Stoner, with the upgraded performance you expect from Magpul where it really matters. This winning combination makes this kit an economical way to build a complete lower, less a stock assembly of your choice and a stripped lower receiver. The Magpul AR Enhanced Magazine Release provides an enlarged contact surface for quick and fumble free magazine changes. With easy bolt-on installation with no gunsmithing required, the Enhanced AR Magazine Release is made of Mil-Spec hard anodized aluminum to provide durability and light weight. Developed from the operational experience of the Magpul Dynamics team, the B.A.D. Lever (Battery Assi...