BCA AR-15 Complete Upper Assembly, 18" 4150 Parkerized Heavy Barrel, .450 Bushmaster, Mid Length Gas System, 1:24 Twist w/ 15" MLOK
- 18" 4150 Chrome Moly Vanadium Steel Barrel
- Heavy Barrel Profile
- 1:24 Twist Rate
- Mid Length Gas System
- .750 Gas Block System
- .089 Gas Hole Diameter
- 15" MLOK Rail
- .450 Bushmaster Caliber
- M4 Flat Top Forged Upper Receiver w/ Forward Assist
- Bolt Carrier Group
- Rear Charging Handles
- Spiral Flash Hider
This BCA AR-15 Complete Upper Assembly has an 18" heavy barrel made out of 4150 chrome moly vanadium steel with a parkerized finish, a 1:24 twist rate and a Mid Length Gas System. The build includes a 15" MLOK rail, an M4 flat top forged upper receiver with forward assist, a bolt carrier group, a Spiral flash hider and a charging handle. It is chambered in .450 Bushmaster and machined with feed ramps in the barrel extension.
All Finished Barrels go through a 100% Inspection Process.
Inspections Equipment includes CMMs and Air Gauges for the Bores.
BCA's expectations is that our Barrels, 16 inch or longer, will hold a 1.000" MOA at 100 yards with appropriate ammo and shooting techniques.
|Material||4150 Chrome Moly Vanadium|
|Thread Pitch||5/8 x 32|
|Gas System||Mid Length|
|Gas Block System||0.750|
|Gas Hole Diameter||0.089|
|Charging Style||Rear Charging|
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