Ar-15/m16 Left Hand Upper Receivers – Ar-15/m16 16”” Rxa15 Bull Upper Receiver Left Hand

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Left Hand Upper Receiver assemblies complete with barrel gas block and handguard installed. These receiver require the use of a left hand bolt carrier group also available from Red X Arms. These upper receivers feature 416R stainless steel barrels with either a 1-9 twist or 1-8 twist in the 20″ and 24″ bull barrels and are 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. Bull barrel models feature either Mfg: Red X Arms