Davidson Defense Aegis 14.5-inch Mid-Gas 1:7 5.56 NATO AR-15 M-Lok Handguard Pistol Upper Build Kit

Aegis 14.5-inch 5.56 NATO AR-15 Upper Build Kit

The Aegis is built around a 14.5-inch 5.56 NATO barrel with a medium profile, finished in nitride, paired with a 7075-T6 aluminum upper receiver finished in black anodizing. It pairs a 12-inch ultra-lightweight minimalist M-LOK handguard with a GI-style A2 birdcage flash hider at the muzzle, running on a mid-length gas system. BCG and charging handle are not included, leaving the buyer to supply those components separately.

Key Features

• 14.5-inch 5.56 NATO barrel, 1:7 twist, medium profile, Nitride finish
• Mid-length gas system with micro low-profile steel gas block
• 7075-T6 aluminum upper receiver, black anodized finish
• 12-inch ultra-lightweight minimalist M-LOK handguard
• GI-style A2 birdcage flash hider
• BCG and charging handle are not included.

Barrel and Gas System

The barrel runs 14.5 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 and a 1/2x28 muzzle thread. Gas cycles back to the action through a mid-length system, running a stainless steel mid-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 an 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 12-inch ultra-lightweight minimalist handguard, using an M-LOK attachment system along its length. This handguard does not include anti-rotation tabs.

Muzzle Device

Capping the muzzle is a GI-style A2 birdcage flash hider, threaded to match the barrel's 1/2x28 pattern and secured with the included 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.