The Helcaraxe 16-inch AR-15 .300 BLK complete upper build from Davidson Defense provides a robust foundation for precision shooting and reliable performance. Crafted from durable 4150 Chrome Moly Vanadium steel, the 16-inch barrel features an H-Bar profile, a 1:8 twist rate, and is finished in phosphate for increased longevity. The barrel utilizes a pistol gas system with a 5/8x24 thread pitch, paired with a 5/8x24 steel flash can muzzle device, ensuring optimal gas flow and recoil management.
The upper receiver is constructed from lightweight 7075 T6 aluminum, anodized for added protection, and includes M4 feed ramps. A complete Bolt Carrier Group made from 9310 alloy steel in a nitride finish enhances operational reliability. The handguard, featuring a sleek M-Lok design, is made from black aluminum, ensuring a lightweight yet durable setup. This complete upper build is designed for gunsmiths seeking freedom without compromising accuracy or performance.
Caliber: .300 Blackout
Barrel Material: 4150 Chrome Moly Vanadium
Barrel Thread Pitch: 5/8x24
Barrel Gas System: Pistol
Barrel Length: 16-inch
Barrel Finish: Phosphate
Barrel Profile: H-Bar
Barrel Twist Rate: 1:8
Upper Receiver Material: 7075 T6 Aluminum
Upper Receiver Finish: Anodized
Charging Handle: AR-15 Mil-Spec Charging Handle
Bolt Carrier Material: 9310 Alloy Steel
Bolt Carrier Finish: Nitride
Bolt Carrier: Complete Bolt Carrier Group
Barrel Name: "Springer"
Upper Receiver Name: Mil-Spec AR-15 Upper w/ M4 Feedramps
Gas Block Size: 0.75
Muzzle Device: 5/8x24 Steel Flash Can
Muzzle Thread Pitch: 5/8x24
Handguard Material: Aluminum
Handguard Color: Black
Handguard Style: M-Lok
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