Davidson Defense Midnight 16-inch Carbine-Gas 1:7 5.56 NATO AR-15 M-Lok Rifle Full Build Kit

Midnight 16-inch Carbine-Gas 5.56 NATO AR-15 M-Lok Rifle Full Build Kit

The Midnight is a complete AR-15 build kit designed for shooters who want a reliable carbine platform without the hassle of sourcing individual components. This kit includes everything needed to complete your build except the serialized lower receiver. The 16-inch barrel with 1:7 twist rate handles standard 5.56 NATO and .223 Remington ammunition, while the free-float M-Lok handguard gives you mounting flexibility for optics and accessories. The kit comes with a mil-spec lower parts kit, complete bolt carrier group, carbine-length buffer system, and SOPMOD-style collapsible stock. All upper components are pre-assembled and ready for installation onto a stripped lower receiver.

Key Features

• 16-inch 4150 CrMoV steel barrel with nitride finish and 1:7 twist rate
• Free-float 15-inch M-Lok handguard with full-length monolithic Picatinny rail
• Complete mil-spec lower parts kit with curved trigger and fire control group
• USA-made bolt carrier group compatible with 5.56 NATO, .223 Remington, .300 Blackout, and .350 Legend
• Carbine-length gas system with .750-inch low-profile gas block
• SOPMOD-style collapsible stock with integrated QD sling mounts and storage compartments
• A2 GI birdcage flash hider with crush washer
• 6-position adjustable carbine buffer tube with 3 oz recoil buffer

Perfect For

• Builders looking for a complete kit requiring only a lower receiver
• Shooters wanting a reliable 5.56 NATO carbine platform
• Those seeking a free-float setup for improved accuracy
• Tactical applications and home defense configurations
• First-time builders who want pre-assembled upper components

Design Intent and Component Selection

This kit prioritizes reliability and versatility through mil-spec construction. The 16-inch barrel length positions the Midnight as a true carbine, offering maneuverability in close quarters while maintaining the velocity needed for effective 5.56 NATO ballistics. The 1:7 twist rate stabilizes heavier ammunition loads, making this platform flexible across the full spectrum of .223 and 5.56 ammunition types. The free-float handguard eliminates barrel contact, which improves shot-to-shot consistency by removing variables introduced through traditional handguard-to-barrel contact.

M-Lok Ecosystem and Accessory Mounting

The 15-inch M-Lok handguard provides industry-standard mounting points for tactical accessories. The full-length monolithic Picatinny rail on top ensures scope and red dot mounting without additional hardware. M-Lok slots along the sides and bottom accept picatinny rail sections, bipods, lights, and vertical grips without the need for rail adapters. This modular approach lets you build the exact configuration your mission demands.

Complete Kit Component Breakdown

This full build kit includes the upper assembly, bolt carrier group, charging handle, lower parts kit, buffer tube, buffer, recoil spring, castle nut, end plate, and SOPMOD-style stock. The lower receiver is not included and must be purchased separately as a serialized component. All other components needed to complete your rifle are included in this kit.

SOPMOD Stock and Ergonomics

The SOPMOD-style collapsible stock offers six adjustment positions for shooters of different sizes and shooting preferences. The extended cheek surface provides consistent cheek weld for optics use. Integrated quick-detach sling mounts accept standard push-button QD sling swivels, and built-in storage compartments hold batteries, cleaning supplies, or ammunition.

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