BCA AR-15 Complete Upper Assembly, 10.5” 4150 Parkerized Heavy Barrel, .450 Bushmaster, Carbine Length Gas System, 1:24 Twist w/ 10” MLOK Rail
- 10.5” Heavy Barrel.
- 4150 Chrome Moly Vanadium
- Parkerized finish
- 1:24 Twist
- 10” BLANK Rail
- .450 Bushmaser Caliber
- Carbine Length Gas System
- M4 Flat-Top Forged Upper Receiver
- Standard Bear Creek Arsenal Bolt Carrier Group
- Charging Handle
- LS2 Flash Hider
This BCA AR-15 Complete Upper has a 10.5” barrel with a Heavy profile, made of 4150 steel with a Parkerized finish, and features a 1:24 Twist Rate, a Carbine length gas system and .750 Gas Block.
The Upper Assembly includes a 10” MLOK Rail, an M4 flat-top forged upper receiver with forward assist, a BCA Bolt Carrier Group, an LS2 Flash Hider, and a Charging Handle, It is chambered in .450 Bushmaster and machined with a single feed ramp in the barrel extension.
This BCA AR-15 Complete Upper Assembly, 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. This upper is also backed by our Bear Den Guarantee.
|Material||4150 Chrome Moly Vanadium|
|Thread Pitch||5/8 x 32|
|Gas Block System||0.750|
|Gas Hole Diameter||0.093|
|Charging Style||Rear Charging|
|Product Type||Complete Upper Assembly|
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