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Description
This Bear Creek Arsenal AR-15 Complete 5.56 rifle length upper has a 20" heavy barrel with a black nitride finish, and features a 1:7 twist, with a rifle length gas system. It includes the new 15" MLOK, a M4 flat-top forged upper receiver, a BCA bolt carrier group, flash hider, and a rear charging handle. This 5.56 upper is compatible with any mil-spec AR-15 lower.
More Information
SKU 861N-UA556RHB2017M-15M3
Weight (lbs) 5.000000
Magazine Capacity N/A
Barrel Length 20
Profile Heavy Barrel
Twist 1:7
Barrel Finish Black Nitride
Material 4150 Chrome Moly Vanadium
Thread Pitch 1/2 x 28
Caliber 5.56 NATO
Feed Ramp M4
Flutes Non-fluted
Gas System Rifle Length
Gas Block System 0.750
Charging Style Rear Charging
Classification Complete Upper Assembly
Platform AR-15
Bolt Material E9310
Receiver Material Forged
