The Council 18-inch AR-15 .450 Bushmaster Rifle Upper Build Kit from Davidson Defense is engineered for gunsmiths who value performance and freedom. This kit features an 18" "Sepal" barrel made from 4150 Chrome Moly Vanadium steel, with a 1:24 twist rate, phosphate finish, and H-Bar profile. Its mid-length gas system paired with a 0.75 gas block ensures reliable cycling. The upper receiver is crafted from durable 7075-T6 forged aluminum and finished in anodized black, providing exceptional strength. The kit includes a black M-Lok handguard made of 6061-T6 aluminum, offering versatility for accessory attachment. A KAK .458 compensator is included to reduce recoil, featuring a muzzle thread pitch of 5/8x32 for compatibility. This upper build kit is a solid choice for gunsmiths looking to assemble a powerful and dependable .450 Bushmaster platform.
Barrel Name: "Sepal" 18" .450 Bushmaster 1-24T 4150 CMV Phosphate Steel HBAR
Caliber: .450 Bushmaster
Barrel Length: 18-inch
Barrel Material: 4150 Chrome Moly Vanadium
Barrel Twist Rate: 1:24
Barrel Finish: Phosphate
Barrel Profile: H-Bar
Barrel Thread Pitch: 5/8x32
Barrel Gas System Length: Mid-Length
Gas Block Size: 0.75
Upper Receiver Material: Machined from 7075-T6 forged aluminum
Upper Receiver Finish: Anodized Black
Handguard Material: 6061-T6 Aluminum
Handguard Color: Black
Handguard Style: M-Lok
Muzzle Device: Compensator
Muzzle Device Name: KAK .458 Compensator
Muzzle Thread Pitch: 5/8x32
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