Davidson Defense Stormborn 7.5" 5.56 NATO AR-15 Pistol Build Kit, M-Lok, 1:7, w/ Magpul BTR Brace

Stormborn 7.5" 5.56 NATO AR-15 Pistol Build Kit, M-Lok, 1:7, w/ Magpul BTR Brace

This is a complete upper and lower build kit for a 5.56 NATO AR-15 pistol platform. The Stormborn features a 7.5-inch chrome moly barrel with a 1:7 twist rate, paired with a billet upper receiver and a 7-inch M-Lok freefloat handguard. The kit includes a complete bolt carrier group, charging handle, Magpul BTR pistol brace, buffer tube, buffer, recoil spring, castle nut, and end plate. Lower receiver not included.

Key Features

• 7.5-inch 5.56 NATO barrel with 1:7 twist and pistol-length gas system
• Billet upper receiver with anodized finish for durability
• 7-inch M-Lok freefloat handguard for accessory mounting and accuracy
• Complete bolt carrier group in nitride finish
• Magpul BTR pistol brace for stability and control
• Mil-spec charging handle and buffer tube
• GI birdcage flash hider with 1/2x28 thread pitch

Perfect For

• Shooters building a compact 5.56 NATO pistol platform
• Users who want a complete kit without sourcing individual components
• Owners seeking a freefloat handguard for improved accuracy
• Builders who prefer billet upper receiver construction
• Pistol shooters needing a stable brace setup

M-Lok Accessory Compatibility

The 7-inch M-Lok handguard provides multiple mounting points for tactical accessories without adding weight or complexity. M-Lok slots run along the sides and bottom of the handguard, allowing you to attach grips, lights, lasers, and rail sections exactly where you need them. The freefloat design keeps the handguard free from the barrel, which improves shot-to-shot consistency by eliminating contact between the barrel and furniture.

Compact Pistol Platform Design

This build kit is purpose-built for the AR-15 pistol market. The 7.5-inch barrel delivers velocity suitable for 5.56 NATO while maintaining a compact overall profile. The 1:7 twist rate stabilizes standard and heavier 5.56 ammunition without over-stabilizing lighter rounds. Pistol-length gas system tuning reduces felt recoil and keeps the action smooth across different ammunition types. The Magpul BTR brace provides the support and control needed for accurate rapid fire from the pistol platform.

Billet Construction and Finish Quality

The upper receiver is machined from 6061-T6 aluminum and hard-anodized for corrosion resistance. The barrel uses 4150 chrome moly vanadium steel with manganese phosphate finish, a proven combination for durability and longevity. All critical surfaces are protected against wear and environmental exposure. The nitride-finished bolt carrier group resists fouling and requires less frequent cleaning than standard finishes.

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 included with this full build kit.