This skeletonized pistol grip fits AR-15 (.223/5.56) and .308 AR lowers that take a standard AR pistol grip. It is machined from 6061-T6 aluminum and black anodized, and the open skeleton pattern keeps it light at 3.6 oz. The flat-black anodized finish matches a standard black-anodized receiver, and the slim profile suits rifle and pistol builds alike. It mounts with your existing grip screw. A mounting bolt is not included, so keep the bolt from the grip you are replacing. Features: Fits .223/5.56 AR-15 and .308 AR lowers 6061-T6 aluminum, skeletonized Black anodized finish Weight: 3.6 oz Height: 4" Length: 2-1/4" Width: 7/8" Machined and anodized in the USA Mounting bolt not included (re-use your existing grip bolt) Before installing, check that your lower uses a standard AR-pattern grip mount. Keep the safety selector detent and spring captured when you remove the old grip, because the grip holds the detent spring in place.