FN America Fn15 16 Carbine Upper (Hf Barrel) 36426 845737005979

FN 15 Upper Receiver Assemblies are meticulously built in FN's Columbia South Carolina manufacturing facility alongside US Military contract M4 rifles. Each upper receiver is supplied with and M16-style Bolt Carrier Assembly with properly staked gas key and Carpenter 158 Magnetic Particle Inspected (MPI) bolt, charging handle and FN's venerable cold hammer-forged barrel.Proprietary CrMoV Barrel Steel Hard Chrome Lined to Mil Standard 171 M4 Feed Ramps High Pressure Tested