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

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

The Davidson Defense Stormborn is a complete 5.56 NATO pistol build kit designed for shooters who want a compact, maneuverable platform. This kit includes everything needed to complete a lower receiver except the serialized lower itself: upper assembly, bolt carrier group, charging handle, lower parts kit, buffer system, and a Gauntlet Arms stabilizing brace.

Key Features

• 7.5-inch 4150 Chrome Moly Vanadium barrel with 1:7 twist rate for reliable 5.56 NATO performance
• Freefloat M-Lok handguard in 6061-T6 aluminum for accessory mounting and heat management
• Micro low-profile gas block paired with pistol-length gas system for compact cycling
• Gauntlet Arms polymer stabilizing brace in black for controlled handling
• Billet upper receiver with anodized finish and mil-spec charging handle
• Complete 9310 alloy steel bolt carrier group with nitride finish
• Standard carbine buffer and recoil spring with heavy-duty pistol buffer tube
• GI birdcage flash hider with 1/2x28 thread pitch

Perfect For

• Shooters building a compact 5.56 NATO pistol platform
• Builders seeking a complete kit without needing individual component sourcing
• Users prioritizing maneuverability in confined spaces
• Pistol-caliber enthusiasts transitioning to intermediate cartridges

Compact Platform Design

The 7.5-inch barrel paired with the pistol-length gas system creates a naturally short overall length, making this platform ideal for shooters who need quick target acquisition in tight quarters. The micro low-profile gas block sits low on the barrel to minimize interference with optic mounting, while the freefloat handguard design isolates the barrel from external pressure points. This combination delivers consistent shot placement without the bulk of longer configurations.

Freefloat M-Lok Mounting Ecosystem

The aluminum M-Lok handguard provides direct mounting points for lights, lasers, and vertical grips without requiring additional rail sections. The freefloat design means the barrel hangs freely within the handguard, eliminating contact that can shift point of impact during firing. This approach keeps the platform lightweight while maintaining the accessory flexibility needed for dynamic shooting scenarios.

Gauntlet Arms Brace Stability

The Gauntlet Arms polymer brace offers a high-strength stabilizing platform designed to secure the pistol against your arm during firing. The brace material resists impact and flexing while remaining lightweight. This configuration allows for controlled two-handed shooting technique while maintaining the pistol platform classification.

Complete System Integration

All components work together as a cohesive system. The 9310 alloy steel bolt carrier group with nitride finish pairs with the standard carbine buffer and recoil spring to manage the impulse from 5.56 NATO rounds through the pistol gas system. The heavy-duty pistol buffer tube accommodates the brace attachment while maintaining proper cycling dynamics.

Lower receiver not included. Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.