Davidson Defense Midnight Marshall 7.5" 5.56 NATO AR-15 Pistol Build Kit, M-Lok, 1:7, w/ SBA5 Brace

Midnight Marshall 7.5" 5.56 NATO AR-15 Pistol Build Kit, M-Lok, 1:7, w/ SBA5 Brace

The Midnight Marshall is a complete pistol build kit built around a 7.5-inch barrel with a SBA5 brace, designed for shooters who want a compact 5.56 NATO platform. This kit includes everything except the lower receiver: upper assembly, bolt carrier group, charging handle, buffer system, lower parts kit, and the SBA5 brace for immediate functionality.

Key Features

• 7.5-inch 4150 Chrome Moly Vanadium barrel with 1:7 twist rate for 5.56 NATO
• Freefloat 7-inch M-Lok handguard in Type III hard coat anodized finish
• AR-15 upper receiver with M4 feed ramps and 7075-T6 aluminum construction
• SB Tactical SBA5 pistol stabilizing brace in black nylon reinforced polymer
• Complete bolt carrier group in 9310 alloy steel with nitride finish
• Mil-spec M4 charging handle and 3 oz. buffer
• Micro low-profile gas block with pistol-length gas system
• A2 birdcage flash hider with 1/2x28 muzzle thread pitch

Perfect For

• Shooters building a compact 5.56 NATO pistol platform
• Home defense setups requiring shorter overall length
• Range shooters wanting a portable, maneuverable build
• Builders seeking a complete upper and lower system without the serialized receiver

Compact Pistol Platform Design

This kit delivers a 7.5-inch barrel with pistol-length gas system tuning, optimized for the shorter cycling window. The freefloat handguard isolates the barrel from external pressure, maintaining accuracy potential despite the compact profile. The 1:7 twist stabilizes standard and heavier 5.56 ammunition across the velocity range this barrel length produces.

SBA5 Brace System

The SB Tactical SBA5 provides a nylon reinforced polymer construction that's lightweight and durable. The brace ships as part of this kit and attaches to the carbine-length buffer tube included. The design supports one-handed or two-handed shooting configurations depending on shooter preference and application.

Upper Assembly and Handguard Integration

The upper assembly uses 7075-T6 aluminum with M4 feed ramps for reliable feeding. The 7-inch freefloat M-Lok handguard allows accessory mounting flexibility without affecting barrel harmonics. Type III hard coat anodizing provides corrosion resistance and durability in field use.

Bolt Carrier and Charging System

The complete bolt carrier group uses 9310 alloy steel with nitride finish for wear resistance. The mil-spec M4 charging handle provides standard AR-15 operation and reliability across thousands of rounds.

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