Ar15/M16 7.5" Rxa15 Ss Mod Upper Receiver

Upper Receiver assemblies complete with barrel, gas block and handguard installed.  These upper receivers feature 416R stainless steel barrels, with 1-9 twists and chambered in 5.56mm.  Barrel extensions and upper receiver include M4 feedramps.  Upper receiver is forged 7075-T6 aluminum and has T-Marks.  M4 and 7.5" models feature stainless steel A2 flash hiders, 1/2-28 threads, modular handguard compatible with Magpul rails and .750" gas blocks. All upper receivers do not include a charging handle or bolt carrier group.All NFA Rules apply.