Davidson Defense Black Dagger w/Gauntlet Arms Brace 7.5-inch AR-15 9MM Pistol Full Build Kit

Black Dagger w/Gauntlet Arms Brace 7.5-inch AR-15 9MM Pistol Full Build Kit

This is a complete 9MM AR-15 pistol build kit designed for shooters who want a compact, controllable platform in pistol caliber. It includes everything except the serialized lower receiver: a billet aluminum upper receiver, 7.5-inch 4150 CrMoV barrel, nitride bolt carrier group, Gauntlet Arms stabilizing brace, and all necessary buffer system components. The 9MM configuration accepts both Glock and Colt magazines, giving you flexibility with common ammunition sources. The A2 flash hider reduces muzzle rise and flash signature for better control in rapid fire scenarios.

Key Features

• Billet aluminum upper receiver with Type III hard coat anodized finish for durability
• 7.5-inch 4150 CrMoV barrel with 1-10 twist rate optimized for 9MM
• Nitride bolt carrier group designed for 9MM external extractor operation
• Gauntlet Arms polymer stabilizing brace for controlled shooting
• A2 flash hider with 1/2x36 thread pitch reduces muzzle rise and flash
• 7-inch M-Lok handguard for rail mounting accessories
• Includes bolt carrier group, charging handle, buffer tube, buffer, recoil spring, end plate, castle nut, and lower parts kit

Perfect For

• Shooters building their first AR-15 pistol platform
• Those seeking a compact 9MM configuration with magazine compatibility options
• Builders wanting a complete kit without the serialized lower receiver
• Pistol caliber carbine enthusiasts who prefer billet construction

Compact 9MM Pistol Platform

The 7.5-inch barrel length creates a truly compact platform while maintaining functional velocity for 9MM rounds. The billet aluminum upper receiver provides precision machining and a clean aesthetic compared to forged alternatives. The HBAR profile barrel offers consistent accuracy across the velocity range of 9MM ammunition, whether you're using standard or subsonic loads.

Gauntlet Arms Stabilizing Brace Design

The Gauntlet Arms polymer brace integrates with the buffer tube to provide controlled shooting support without adding unnecessary weight. The high-strength polymer construction balances durability with affordability, making this a practical choice for a complete build kit. The brace design allows for natural wrist support during firing while maintaining the pistol configuration.

Magazine Compatibility and Bolt Carrier Configuration

This kit uses a 9MM nitride bolt carrier group with external extractor design that accepts both Glock and Colt magazine patterns. This dual compatibility means you have access to a wider range of affordable ammunition sources and magazine options compared to single-pattern 9MM builds. The nitride finish on the bolt carrier provides corrosion resistance and extended service life.

Flash Control and Recoil Management

The A2 flash hider reduces visible muzzle flash and helps manage muzzle rise during rapid fire sequences. The 1/2x36 thread pitch is standard for 9MM platforms, allowing for future suppressor compatibility if you choose to explore that path later. The HBAR barrel profile contributes to recoil management by distributing weight more evenly along the barrel length.

Lower receiver not included. BCG and charging handle are not included in the upper assembly. Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.