Davidson Defense Nightwalker 16-inch Carbine-Gas 1:16 .350 Legend AR-15 Freefloat M-Lok Handguard Rifle Upper Build Kit

Nightwalker 16-inch Carbine-Gas 1:16 .350 Legend AR-15 Freefloat M-LOK Tubular Upper Build Kit

The Nightwalker is a .350 Legend AR-15 Upper Build Kit built around a 16-inch carbine-length gas platform. The kit centers on a 16-inch Balmung M4 profile steel barrel with a phosphate finish, 1:16 twist rate, and 5/8x24 thread pitch, paired with a black GI birdcage flash hider compatible with .350 Legend, .308 Winchester, 7.62x39, and .300 Blackout, and a black 5/8-inch crush washer. A micro low-profile steel gas block at 0.750 diameter and a carbine-length stainless steel gas tube are included on the front end. The upper receiver is a USA-made billet aluminum slick side design with an anti-rotation cutout and no forward assist, paired with a 15-inch freefloat tubular M-LOK handguard in black aluminum with a suppressor-ready profile, 1.77-inch internal diameter, and partial Picatinny rail section. BCG and charging handle are not included.

Key Features

• 16-inch Balmung M4 profile steel barrel, phosphate finish, 1:16 twist, 5/8x24 thread pitch, .350 Legend
• Carbine-length gas system
• Carbine-length stainless steel gas tube
• Micro low-profile steel gas block, 0.750
• GI birdcage flash hider, black, 5/8x24, .350 Legend and .308 Winchester and 7.62x39 and .300 Blackout compatible, black crush washer included
• USA-made billet aluminum slick side upper receiver, anti-rotation cutout, no forward assist
• 15-inch freefloat tubular M-LOK handguard, black aluminum, suppressor-ready profile, 1.77-inch internal diameter, partial Picatinny rail section
• BCG and charging handle not included

Perfect For

• Builders sourcing a complete .350 Legend AR-15 upper build kit with a USA-made billet slick side upper and 15-inch tubular suppressor-ready M-LOK handguard, pairing it with their own bolt carrier group and charging handle
• Shooters building a 16-inch .350 Legend carbine-gas platform who prefer to select their own BCG while having the Balmung M4 profile barrel, compatible muzzle device, and slick side billet upper with suppressor-ready handguard covered in one kit
• AR-15 builders who want a 15-inch freefloat tubular M-LOK handguard with a 1.77-inch internal diameter suppressor-ready profile on a USA-made slick side billet upper without sourcing components separately

Barrel and Muzzle Device

The 16-inch Balmung M4 profile barrel is chambered in .350 Legend and constructed from steel with a phosphate finish. The twist rate is 1:16 and the thread pitch is 5/8x24, which matches the included black GI birdcage flash hider. The flash hider is compatible with .350 Legend, .308 Winchester, 7.62x39, and .300 Blackout at the 5/8x24 thread pitch. A black 5/8-inch crush washer, a micro low-profile steel gas block at 0.750 diameter, and a carbine-length stainless steel gas tube cover the front end gas configuration on this carbine-length platform.

Slick Side Billet Upper Receiver and Handguard

The USA-made billet aluminum slick side upper receiver features an anti-rotation cutout and removes the forward assist housing from the upper receiver body for a clean exterior profile. The 15-inch freefloat tubular M-LOK handguard is black aluminum with a suppressor-ready tubular profile, a 1.77-inch internal diameter that accommodates a suppressor body within the handguard, M-LOK attachment points along the body for accessory mounting, and a partial Picatinny rail section. These two components define the exterior structure of the upper assembly on this .350 Legend platform.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. BCG and charging handle are not included.