This Bear Creek Arsenal AR-15 Complete 5.56 Side Charging pistol upper has a 7.5" M4 barrel with a 416R stainless steel finish, and features a 1:7 twist, with a pistol length gas system. It includes the new 6.5" MLOK rail, a M4 flat-top 7075 billet aluminum upper receiver, a BCA Bolt Carrier Group, Flash Hider, and a right-side charging (Gen2) handle (patent protected). This 5.56 upper is compatible with any mil-spec AR-15 lower.
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Magazine not included. Check out Magazines here!
|Material||416R Stainless Steel|
|Thread Pitch||1/2 x 28|
|Feed Ramp||M4 Feedramp|
|Gas System||Pistol Length|
|Gas Block System||0.750|
|Charging Style||Right Side 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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