Davidson Defense Aegis 7.5" Stainless 5.56 AR-15 Pistol Build Kit, M-Lok, 1:7, w/ Gauntlet Arms Brace

Aegis 7.5" Stainless 5.56 AR-15 Pistol Build Kit, M-Lok, 1:7, w/ Gauntlet Arms Brace

This is a complete AR-15 pistol build kit designed around a 7.5-inch stainless steel barrel and the Gauntlet Arms stabilizing brace. The kit includes everything except the lower receiver, giving you a ready-to-configure platform for 5.56 NATO ammunition. The short barrel and pistol gas system make this setup compact and maneuverable while maintaining reliable cycling with standard ammunition.

Key Features

• 7.5-inch 416R stainless steel barrel with 1:7 twist rate and government profile
• Micro low-profile gas block sized for pistol-length gas system
• Free-floating M-LOK handguard for accessory mounting and improved accuracy
• Gauntlet Arms polymer stabilizing brace for support and control
• Bolt carrier group in 9310 alloy steel with nitride finish
• AR-15 M4 mil-spec charging handle
• GI birdcage flash hider with 1/2x28 thread pitch
• Stripped upper receiver with M4 feed ramps and anodized finish

Perfect For

• Shooters building their first short-barrel AR-15 platform
• Home defense and close-quarters configurations
• Compact shooting setups that prioritize maneuverability
• Builders looking for a complete upper and lower parts solution

Compact 7.5-inch Barrel Configuration

The 7.5-inch barrel length strikes a balance between portability and velocity retention. At this length, the 1:7 twist rate stabilizes standard 5.56 NATO rounds reliably across a range of grain weights. The government profile keeps weight down while maintaining stiffness for consistent accuracy. Stainless steel construction resists corrosion and extends barrel life, especially in harsh environments or after extended shooting sessions.

Pistol-Length Gas System and Cycling

This kit uses a pistol-length gas system paired with a micro low-profile gas block. The shorter gas tube reduces felt recoil and allows the bolt carrier to cycle reliably without over-gassing. The nitride-finished 9310 alloy steel bolt carrier handles the cycling demands of the pistol-length setup while maintaining durability through extended use.

Free-Floating Handguard and Accessory Compatibility

The free-floating M-LOK handguard isolates the barrel from contact with the upper receiver, which reduces harmonic vibration and improves accuracy potential. M-LOK slots run the full length of the handguard, giving you multiple mounting points for lights, grips, slings, and other tactical accessories without requiring rail sections.

Gauntlet Arms Stabilizing Brace

The Gauntlet Arms brace is a polymer design that wraps around the shooter's arm for support and control during firing. The brace is designed to reduce felt recoil and improve handling in dynamic shooting situations. This brace configuration allows for one-handed operation and provides a stable shooting platform without the need for a traditional stock.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. BCG and charging handle are not included in the upper assembly alone, but this full build kit includes both components.