Complete AR15 Upper 16″ M4 1×8 5.56, Carbine Single Rail Height Gas Block, M16 BCG

Looking to gain a competitive edge with your AR-15? Our Complete AR-15 Upper 16″ M4 1×8 5.56, Carbine Single Rail Height Gas Block is the solution. Featuring a versatile .223 / 5.56 M4 chamber with feed ramp, a precise 1×8 barrel twist, and durable chrome moly stress-relieved barrel construction, this upper delivers top-tier performance.

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