This BCA AR-15 Complete Upper has a 10.5″ barrel with a Heavy Barrel profile, made of 4150 Chrome Vanadium with a Parkerized finish, and features a 1:8 Twist Rate, a Pistol length gas system
The Upper includes a 10″ MLOK Split Rail, an M4 flat-top upper receiver with forwarding assist, a BCA Bolt Carrier Group, a Flash Hider, and a Charging Handle. It is chambered in .300 Blackout and machined with 300 Blackout feed ramps in the barrel extension.
This BCA AR-15 Complete Upper, like all BCA products, is subjected to numerous QA/QC checks which for our firearms and complete upper receiver assemblies includes test firing prior to approval and shipment.
Choose an upper designed by a US company and made in the USA. Choose Bear Creek Arsenal.
*Note – We strive to provide the most accurate photographs of our product. Variations may occur in the skeletonized section of the handguard/flash hider you receive.
Profile Heavy Barrel
Material 4150 Chrome Moly Vanadium
Thread Pitch 5/8 x 24
Caliber .300 Blackout
Feed Ramp .300 Blackout
Gas System Pistol
Gas Block System 0.750
Gas Hole Diameter 0.125
Charging Style Rear Charging
Product Type Complete Upper Assembly
Magazine Capacity N/A