Davidson Defense Nightwatch 16-inch Carbine-Gas 1:8 .223 Wylde AR-15 Freefloat M-Lok Handguard Rifle Full Build Kit

Nightwatch 16-inch Carbine-Gas 1:8 .223 Wylde AR-15 Freefloat M-LOK Rifle Full Build Kit

The Nightwatch is a .223 Wylde AR-15 Full Build Kit built around a 16-inch carbine-length gas platform. The kit centers on a 16-inch straight profile 4150 steel barrel with a black nitride finish, 1:8 twist rate, and 1/2x28 thread pitch, paired with an A2 birdcage flash hider and a black crush washer. A micro low-profile steel gas block at 0.750 journal diameter and a carbine-length stainless steel gas tube are included on the front end. The USA-made slick side billet 6061 aluminum upper receiver features an anti-rotation cutout and no forward assist housing, paired with a 15-inch freefloat M-LOK handguard featuring a full-length Picatinny top rail and integrated QD sling mounts with no anti-rotation tabs. A USA-made complete AR-15 bolt carrier group compatible with .223 Remington, 5.56 NATO, .300 Blackout, and .350 Legend, and a Mil-Spec AR-15 M4 charging handle complete the upper side. The lower hardware includes a complete Mil-Spec AR-15 lower parts kit, a Mil-Spec heavy-duty 6-position carbine buffer tube, a standard 3 oz carbine buffer, a USA-made standard carbine recoil spring, a Mil-Spec AR-15 M16 receiver end plate, and a Mil-Spec AR-15 carbine castle nut. The SOPMOD style collapsible stock in black with storage compartments and integrated QD sling mounts rounds out the kit. Lower receiver not included.

Key Features

• 16-inch straight profile 4150 steel barrel, black nitride finish, 1:8 twist, 1/2x28 thread pitch, .223 Wylde
• Carbine-length gas system
• Carbine-length stainless steel gas tube
• Micro low-profile steel gas block, 0.750 journal
• A2 birdcage flash hider, 1/2x28, black crush washer included
• USA-made slick side billet 6061 aluminum upper receiver, anti-rotation cutout, no forward assist housing
• 15-inch freefloat M-LOK handguard, full-length Picatinny top rail, integrated QD sling mounts, no anti-rotation tabs
• USA-made complete AR-15 bolt carrier group, .223 Remington and 5.56 NATO and .300 Blackout and .350 Legend compatible
• Mil-Spec AR-15 M4 charging handle
• Complete Mil-Spec AR-15 lower parts kit
• Mil-Spec heavy-duty 6-position carbine buffer tube
• Standard carbine buffer, 3 oz
• Standard carbine recoil spring, made in USA
• Mil-Spec AR-15 M16 receiver end plate
• Mil-Spec AR-15 carbine castle nut
• SOPMOD style collapsible stock, black, storage compartments, integrated QD sling mounts

Perfect For

• Builders sourcing a complete .223 Wylde AR-15 full build kit with a USA-made slick side billet upper with anti-rotation cutout, black nitride barrel, USA-made BCG, 15-inch freefloat M-LOK handguard with integrated QD sling mounts, and SOPMOD collapsible stock with storage compartments and QD mounts already included, pairing it with their own lower receiver
• Shooters building a 16-inch carbine-gas .223 Wylde rifle platform who want the USA-made BCG, charging handle, complete lower parts kit, and SOPMOD adjustable stock with storage covered in one kit with a clean slick side billet upper and full-length Picatinny top rail handguard
• AR-15 builders who want a .223 Wylde full build kit with a USA-made slick side billet upper featuring an anti-rotation cutout, a black nitride barrel, and integrated QD sling mounts on both the handguard and stock without sourcing components separately

Barrel and Muzzle Device

The 16-inch straight profile barrel is chambered in .223 Wylde and constructed from 4150 steel with a black nitride finish. The twist rate is 1:8 and the thread pitch is 1/2x28, which matches the included A2 birdcage flash hider. A black crush washer, a micro low-profile steel gas block at 0.750 journal 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 slick side billet 6061 aluminum 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 M-LOK handguard features a full-length Picatinny top rail, integrated QD sling mounts, and no anti-rotation tabs, with M-LOK attachment points along the body for accessory mounting. These two components define the exterior structure of the upper assembly on this AR-15 platform.

Bolt Carrier Group and Charging Handle

The USA-made complete AR-15 bolt carrier group is compatible with .223 Remington, 5.56 NATO, .300 Blackout, and .350 Legend. A Mil-Spec AR-15 M4 charging handle is included to complete the upper component set.

Lower Parts Kit and Buffer System

The complete Mil-Spec AR-15 lower parts kit covers the internal lower receiver components. The buffer system includes a Mil-Spec heavy-duty 6-position carbine buffer tube, a standard 3 oz carbine buffer, a USA-made standard carbine recoil spring, a Mil-Spec AR-15 M16 receiver end plate, and a Mil-Spec AR-15 carbine castle nut. The SOPMOD style collapsible stock in black features storage compartments and integrated QD sling mounts, pairing with the included Mil-Spec carbine buffer tube and covering the rear stock interface for this build.

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