The AR-STONER Competition Customizable 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 provides most of the mil-spec parts generally used in an AR-15 build, plus some upgraded Magpul parts, while still allowing the flexibility to add match grade trigger components. The AR-STONER customizable lower parts kit offers the rugged reliability of AR-Stoner, with the upgraded performance you expect from Magpul where it really matters. These customizable lower parts kits offer an economical way to get all the small pieces needed for an AR-15 lower, without wasting money on the parts you won't use! 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 operatio...