Spike's Tactical 308 LPK, Small Parts, For Livewire or Jack 308, Black Finish, No Fire Control Group, Includes Safety Selector, Detent and Spring, Magazine Catch, Spring and Billet Mag Button, Buffer Retainer Spring and Plunger, Spike's Pro Grip, 1/4x28" Hex Screw, Star Lock Washer SLPKX15