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

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

The Night Sentry is a .223 Wylde AR-15 Upper 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. BCG and charging handle are 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
• BCG and charging handle not included

Perfect For

• Builders sourcing a complete .223 Wylde AR-15 upper build kit with a 7075-T6 hardcoat anodized upper receiver, black nitride barrel, and 15-inch suppressor-ready tubular M-LOK handguard, pairing it with their own bolt carrier group and charging handle
• Shooters building a 16-inch carbine-gas .223 Wylde platform who prefer to select their own BCG while having the black nitride straight profile barrel, hardcoat anodized upper receiver with forward assist, and suppressor-ready freefloat tubular M-LOK handguard covered in one kit
• AR-15 builders who want a .223 Wylde upper build kit with a suppressor-ready 1.77-inch internal diameter tubular M-LOK handguard and black nitride 4150 barrel 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.

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