Bear Arms ST-15 Series v.3. Built with Spikes Tactical BA lower, Strike Ind. Enhanced lower part kit, ALG 4.5lb trigger, BCM GF stock, BCM pistol grip, Aero M4E1 upper, Strike Ind. aluminum dust cover, Strike Ind. forward assist, Raptor ambi charging handle, Fail Zero Nickel Boron BCG, Aero Atlas R-one handguard, Ballistic 18” Fluted Barrel, Strike Ind. muzzle break, and Strike Ind. gas block, GT anti walk pins, etc. Why settle for anything but greatness! (CAN PROVIDE MORE PICTURES UPON REQUEST!)