.450 Bushmaster Complete Upper Assembly 10.5” - Bear Creek Arsenal
This Bear Creek Arsenal 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.
- 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 Hide
It is the customer's responsibility to be aware of all applicable laws and regulations regarding the purchase and ownership of uppers with a barrel length of less than 16". Federal NFA regulations are applicable to this item. An “AR-15 Pistol” upper assembly has a barrel less than 16” in length. Pistol uppers are only for use on AR-15 pistol lowers and legal Short-Barreled Rifles. Other configurations may violate Federal law.