Davidson Defense Hex Wraith 16-inch Pistol-Gas 1:8 .300 Blackout AR-15 Freefloat Handguard Rifle Upper Build Kit

Hex Wraith 16-inch .300 Blackout AR-15 Upper Build Kit

The Hex Wraith is a Davidson Defense Upper Build Kit built around a 16-inch .300 Blackout barrel with an HBAR profile, paired with a 7075-T6 aluminum upper receiver finished in black anodizing. It pairs a 15-inch Unique-ARs Ultra-Light Hex handguard with a GI birdcage flash hider at the muzzle, running on a pistol-length gas system. BCG and charging handle are not included, leaving the buyer to supply those components separately.

Key Features

• 16-inch .300 Blackout barrel, 1:8 twist, Phosphate finish
• Pistol-length gas system with micro low-profile steel gas block
• 7075-T6 aluminum upper receiver, black anodized finish
• Unique-ARs Ultra-Light Hex 15-inch lightweight handguard with hexagonal cutout design
• GI birdcage flash hider, compatible with .300 Blackout, .308 Winchester, and 7.62x39
• BCG and charging handle are not included.

Barrel and Gas System

The barrel runs 16 inches long, chambered in .300 Blackout and finished in phosphate with an HBAR profile. It carries a 1:8 twist rate suited to that chambering and a 5/8x24 muzzle thread. Gas cycles back to the action through a pistol-length system rather than the carbine or mid-length setup more common on a 16-inch barrel, running a pistol-length gas tube and a micro low-profile steel gas block sized to a .750-inch journal.

Upper Receiver and Handguard

The upper receiver is machined from 7075-T6 aluminum and finished in black anodizing, cut with M4 feed ramps for smooth feeding and fitted with a standard AR-15 forward assist assembly. The ejection port carries a standard .223/5.56 door with its rod and spring installed. Over the barrel sits a 15-inch Unique-ARs Ultra-Light Hex handguard finished in black, featuring a lightweight hexagonal cutout design along its length that sheds weight while keeping the profile slim.

Muzzle Device

Capping the muzzle is a GI birdcage flash hider, compatible with .300 Blackout, .308 Winchester, and 7.62x39. It threads onto the barrel's 5/8x24 pattern and is secured in its final timed position with a 5/8-inch black crush washer.

Follow all manufacturer instructions and safe handling practices.

Ensure compliance with all applicable federal, state, and local laws.

BCG and charging handle are not included.