BCA AR-15 Complete Upper Assembly, 18" 4150 Parkerized Heavy Straight Fluted Barrel, 6.5 Grendel Type II, Mid length gas system, 1:8 Twist w/ 15" M-LOK

Special Price $229.90 was $376.99
Out of stock

SKU: UA6.5MHB1818(PF)-(15)MLOK

  • 18" 4150 Parkerized Barrel w/ 1:8 Twist
  • Heavy Barrel Profile w/ Straight Flutes
  • Lightweight Keymod or M-LOK
  • 6.5 Grendel Type II Caliber
  • Mid Length Gas System
  • BCA Standard BCG
  • Charging Handle
  • Bird Cage Flash Hider

The BCA branded complete upper assembly has a 18" 4150 parkerized heavy barrel in a 1:8 twist rate and you can select from a 15" Lightweight Keymod or a 15" MLOK. This complete upper receiver is chambered in 6.5 Grendel Type II and machined with .300 black out feed ramps (both in the lower and barrel extension) and comes with a BCA BCG and charging handle.

The BCA upper assembly, like all BCA products, is subjected to numerous QA/QC checks which for our firearms and upper receiver assemblies includes test firing prior to approval and shipment. This upper assembly is also backed by our BCA limited lifetime warranty. Choose an upper assembly designed by a U.S. company and made in the U.S.A. Choose BCA.


More Information
SKU UA6.5MHB1818(PF)-(15)MLOK
Weight 4.0000
Length 18
Profile Heavy Barrel
Twist 1:8
Finish Parkerized
Material 4150 Chrome Moly Vanadium
Thread Pitch 5/8 x 24
Caliber 6.5 Grendel Type II
Feed Ramp M4
Flutes Straight Flutes
Gas System Mid Length
Gas Block System 0.750
Charging Style Rear Charging
Platform AR-15