The Coldfire .300 BLK AR-15 Full Build Kit is optimized for versatility and performance in a compact configuration. It features an 8.5-inch heavy barrel crafted from 4150 chrome moly vanadium steel, with a 1:8 twist rate for improved bullet stabilization. The pistol gas system is complemented by a micro low-profile gas block, delivering reliable operation. The assembly includes a Magpul BTR Brace for comfortable handling and stability, mounted on a mil-spec heavy-duty AR-15 buffer tube.
The kit also includes a freefloat M-Lok handguard, providing a sleek, lightweight design while allowing attachment of accessories. Built on a 7075 T6 aluminum upper receiver, finished with anodized protection, this build kit ensures durability. It incorporates a nitride-finished bolt carrier group for enhanced performance. This comprehensive kit includes everything necessary for a gunsmith seeking to assemble a reliable and functional .300 Blackout AR-15 pistol.
Caliber: .300 Blackout
Barrel: 8.5" .300 Blackout AR-15 Heavy Barrel
Barrel Length: 8.5 inches
Barrel Material: 4150 Chrome Moly Vanadium
Barrel Thread Pitch: 5/8x24
Barrel Gas System Length: Pistol
Barrel Profile: Heavy
Barrel Twist Rate: 1:8T
Barrel Finish: Parkerized
Gas Block Size: 0.75
Gas Block: Micro Low-Profile Gas Block
Handguard Style: Freefloat
Handguard Color: Black
Muzzle Device: GI Birdcage Flash Hider
Muzzle Thread Pitch: 5/8x24
Upper Receiver: AR-15 Upper Receiver
Upper Receiver Material: 7075 T6 Aluminum
Upper Receiver Finish: Anodized
Charging Handle: AR-15 M4 Charging Handle Mil-Spec Quality
Bolt Carrier: AR-15 5.56/.223/.300/.350 Complete Bolt Carrier Group
Bolt Carrier Material: 9310 Alloy Steel
Bolt Carrier Finish: Nitride
Pistol Brace Information: Magpul BTR Pistol Brace, Black
Buffer Tube Kit: Mil-Spec Heavy-Duty AR-15 6-Position Buffer Tube
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