ATI AR-15 Strikeforce 6-Position Adjustable Stock Package Destroyer Gray: * Scorpion recoil system and aluminum civilian (commercial) buffer tube assembly features a 6 position military type III anodized 6061 T6 aluminum civilian (commercial) buffer tube for maximum fit into the commercial buttstock * Shooting any load size can now be done with no pain being transferred to the shooter * Made with DuPont extreme temperature glass-reinforced polymer * Fits most AR-15 variants, note that the pistol grip uses original mounting hardware for installation * AR-15 stock with cheekrest must be extended 3" to operating charging handle, not compatible with .308 rifles