5.56 16" Firefield Carbine Quad Rail Upper Receiver - FDE

Complete 16" Anonymous Arms 5.56 Forged Upper Receiver with a Carbine Length gas system and a Nitride M4 Barrel with a 1/7 Twist and A Post front sight. Firefield 6" Carbine FDE Quad Rail and an A2 Flash hider. All Mil-spec, US Made parts including a phosphate Bolt Carrier Group. Solid steel low profile gas block. HPT (High Pressure Tested) and MPI (Magnetic Particle Inspected) Bolt and Barrel. Extended Latch Charging handle included.