Davidson Defense Hex Phantom 16-inch Carbine-Gas 1:7 5.56 NATO AR-15 Freefloat Handguard Rifle Upper Build Kit

Hex Phantom 16-inch 5.56 NATO AR-15 Upper Build Kit

The Hex Phantom is built around a 16-inch 5.56 NATO barrel with a medium profile, paired with a 7075-T6 aluminum upper receiver finished in black anodizing. It pairs a 15-inch Unique-ARs Ultra-Light Hex free-float handguard with an A2 GI birdcage flash hider at the muzzle, running on a carbine-length gas system. BCG and charging handle are not included, leaving the buyer to supply those components separately.

Key Features

• 16-inch 5.56 NATO barrel, 1:7 twist, Nitride finish
• Carbine-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 free-float handguard with hexagonal cutout design
• A2 GI birdcage flash hider, 5.56/.223 compatible
• BCG and charging handle are not included.

Barrel and Gas System

The barrel runs 16 inches long, chambered in 5.56 NATO and built from 4150 chrome moly vanadium steel with a nitride finish and medium profile. It carries a 1:7 twist rate, well suited to stabilizing heavier 5.56 bullet weights, along with a 1/2x28 muzzle thread. Gas cycles back to the action through a carbine-length system, running a stainless steel carbine-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, free-floated and finished in black, featuring a distinctive hexagonal cutout design along its length that sheds weight while keeping the profile slim.

Muzzle Device

Capping the muzzle is an A2 GI birdcage flash hider, compatible with both 5.56 NATO and .223 Remington. It threads onto the barrel's 1/2x28 pattern and is secured in its final timed position with a 1/2-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.