The Helcaraxe 16-inch AR-15 .300 BLK Rifle Full Build Kit from Davidson Defense is engineered for gunsmiths seeking reliable performance and durability. This comprehensive kit features a 16-inch barrel made from 4150 Chrome Moly Vanadium with a phosphate finish and HBAR profile, designed with a 1:8 twist rate for optimal accuracy. The pistol gas system complements the .300 Blackout caliber for versatile shooting capabilities. The upper receiver is constructed from 7075 T6 aluminum with an anodized finish, ensuring robustness and a lightweight framework.
This kit includes a Mil-Spec AR-15 M4 charging handle, a complete Bolt Carrier Group made from 9310 alloy steel with a nitride finish, and an adjustable carbine stock over a heavy-duty Mil-Spec 6-position buffer tube. A low-profile gas block and a 5/8x24 steel flash can round out the package, making this a straightforward DIY assembly for those who value craftsmanship and freedom in their firearms.
Caliber: .300 Blackout
Barrel Material: 4150 Chrome Moly Vanadium
Barrel Thread Pitch: 5/8x24
Color: Black
Barrel Gas System: Pistol
Barrel Length: 16-inch
Barrel Finish: Phosphate
Barrel Profile: HBAR
Barrel Twist Rate: 1:8T
Upper Receiver Material: 7075 T6 Aluminum
Upper Receiver Finish: Anodized
Handguard Material: Not specified
Handguard Color: Black
Handguard Style: M-Lok
Charging Handle: Mil-Spec AR-15 M4 Charging Handle
Charging Handle Color: Black
Charging Handle Finish: Anodized
Bolt Carrier Material: 9310 Alloy Steel
Bolt Carrier Finish: Nitride
Bolt Carrier: Complete Bolt Carrier Group
Rifle Stock: Adjustable Carbine Stock
Buffer Tube Name: Mil-Spec Heavy-Duty 6-Position Buffer Tube
Buffer Weight: 3 oz
Gas Block Size: 0.75
Gas Block Name: Micro Low-Profile Gas Block
Muzzle Device: 5/8x24 Steel Flash Can
Muzzle Thread Pitch: 5/8x24
Muzzle Device Finish: Anodized
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