BCA AR-15 Complete Upper Assembly, 18" 4150 Parkerized Heavy Barrel, .450 Bushmaster, Mid Length Gas System, 1:24 Twist w/ 15" MLOK

Special Price $279.99 was $366.47
In stock
SKU
691-UA450MHB18124P-15MLOK3
SKU: 691-UA450MHB18124P-15MLOK3

  • 18” Heavy Barrel
  • 4150 Chrome Moly Vanadium
  • Parkerized Finish
  • 1:24 Twist
  • 15” MLOK Rail
  • .450 Bushmaster
  • Mid 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 18” barrel with a Heavy profile, made of 4150 steel with a Parkerized finish, and features a 1:24 Twist Rate, a Mid length gas system and .750 Gas Block.
The Upper includes a 15” 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 Upper ships out with three test casings.

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. This Rifle is also backed by our Bear Den Guarantee.

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 you receive.

More Information
SKU 691-UA450MHB18124P-15MLOK3
Weight 4.9000
Color Black
Charging Style Rear Charging
Caliber .450 Bushmaster
Feed Ramp Single
Finish Parkerized
Flutes N/A
Gas Block System 0.750
Gas Hole Diameter 0.089
Gas System Mid Length
Length 18
Material 4150 Chrome Moly Vanadium
Platform AR-15
Profile Heavy Barrel
Thread Pitch 5/8 x 32
Twist 1:24
Product Type Complete Upper Assembly