Compatible with most Mil-Spec AR-15 and AR-10 lower receivers, the Odin Works AR-10 / AR-15 XMR 2 Extended Magazine Release offers ample surface area for faster mag changes under stress. Compatible with KNS pins (not included), the XMR features precision-machined 6061 billet aluminum construction for unparalleled durability in a lightweight package. Boasts a contoured profile for a positive, slip-resistant purchase. Fits Mil-Spec AR-15 and AR-10 lower receivers. Includes installation hardware. NOT recommended for use with a Magpul BAD lever.