Davidson Defense Night Sentry 16-inch Carbine-Gas 1:8 .223 Wylde AR-15 Freefloat MLOK Handguard Rifle Full Build Kit

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

The Night Sentry 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 a black 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 7075-T6 aluminum hardcoat anodized upper receiver features M4 feed ramps, an ejection port cover, and a forward assist, paired with a 15-inch freefloat tubular M-LOK handguard in aluminum with a suppressor-ready internal diameter of 1.77 inches in black. 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 buffer tube, a standard 3 oz carbine buffer, a USA-made standard carbine recoil spring, an AR-15 M16 Mil-Spec receiver end plate, and an AR-15 carbine castle nut. The SOPMOD style collapsible stock in black with adjustable length of pull, dual 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
• Black A2 birdcage flash hider, 1/2x28, black crush washer included
• 7075-T6 aluminum upper receiver, hardcoat anodized, M4 feed ramps, ejection port cover, forward assist
• 15-inch freefloat tubular M-LOK handguard, aluminum, black, 1.77-inch internal diameter, suppressor-ready design
• 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 buffer tube
• Standard carbine buffer, 3 oz
• Standard carbine recoil spring, made in USA
• AR-15 M16 Mil-Spec receiver end plate
• AR-15 carbine castle nut
• SOPMOD style collapsible stock, black, adjustable length of pull, dual storage compartments, integrated QD sling mounts

Perfect For

• Builders sourcing a complete .223 Wylde AR-15 full build kit with a 7075-T6 hardcoat anodized upper receiver, black nitride barrel, USA-made BCG, 15-inch suppressor-ready tubular M-LOK handguard, and SOPMOD collapsible stock with dual storage compartments and integrated QD sling 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 QD sling mounts covered in one kit with a suppressor-ready 1.77-inch internal diameter tubular M-LOK handguard
• AR-15 builders who want a .223 Wylde full build kit with a suppressor-ready tubular M-LOK handguard, black nitride barrel, and USA-made BCG compatible with multiple calibers 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 black 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.

Upper Receiver and Handguard

The 7075-T6 aluminum upper receiver carries a hardcoat anodized finish with M4 feed ramps, an ejection port cover, and a forward assist. The 15-inch freefloat tubular M-LOK handguard is aluminum in black with a 1.77-inch internal diameter suppressor-ready design and M-LOK attachment points along the body for accessory mounting. The suppressor-ready internal diameter accommodates a suppressor body within the handguard on compatible suppressor configurations. 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 buffer tube, a standard 3 oz carbine buffer, a USA-made standard carbine recoil spring, an AR-15 M16 Mil-Spec receiver end plate, and an AR-15 carbine castle nut. The SOPMOD style collapsible stock in black features adjustable length of pull, dual storage compartments, and integrated QD sling mounts, pairing with the included Mil-Spec 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.