This BCA AR-15 Complete Upper has a 16" M4 Contour black nitride cold hammer forged barrel, it features a 1:8 Twist Rate and a Carbine length gas system. It includes the new 15" MLOK Rail, an M4 flat-top forged upper receiver, a BCA Bolt Carrier Group, a Flash Hider, a rear Charging Handle, and is chambered in 5.56 NATO.
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Magazine not included. Check out Magazines here!
|Material||4150 Chrome Moly Vanadium|
|Thread Pitch||1/2 x 28|
|Feed Ramp||M4 Feedramp|
|Gas Block System||0.750|
|Charging Style||Rear Charging|
|Classification||Complete Upper Assembly|
What magazine/ammo does BCA recommend for each caliber?
These are brands that BCA uses in the facility to test fire our products. However, there are several brands that will also function properly. Caliber Magazine Ammo Grain Weight Ammo Brands BCA Status AR15 - 223/5...
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