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

Special Price $259.99 was $350.87
In stock
SKU
657-UA450CHB10.5124P-10MLOK3
  • 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.

*Note – We strive to provide the most accurate photographs of our product. Variations may occur in the skeletonized section of the handguard you receive.

More Information
SKU 657-UA450CHB10.5124P-10MLOK3
Weight 3.7900
Length 10.5
Profile Heavy Barrel
Twist 1:24
Finish Parkerized
Material 4150 Chrome Moly Vanadium
Thread Pitch 5/8 x 32
Caliber .450 Bushmaster
Feed Ramp Single
Flutes N/A
Gas Block System 0.750
Gas Hole Diameter 0.093
Charging Style Rear Charging
Color Black
Dimpled Yes
Product Type Complete Upper Assembly
Magazine Capacity N/A
Platform AR-15