300 BLK 8.5" Fortis Rev Rail Pistol Upper Receiver

Complete 8.5" Anonymous Arms 300 BLK Billet Pistol Upper Receiver with Pistol Length gas system and a 300 BLK Nitride barrel with 1/8 twist and KAK 5/8x24 flash can. Fortis 9" Rev Rail. All Mil-spec, US Made parts including a FailZero BCG. Solid steel low profile gas block. HPT (High Pressure Tested) and MPI (Magnetic Particle Inspected) Bolt and Barrel.