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

Night Sentry 16-Inch Carbine-Gas 1:8 .223 Wylde AR-15 Freefloat M-LOK Complete Upper

The Night Sentry Complete Upper is an AR-15 upper assembly chambered in .223 Wylde, built around a 16-inch 4150 CrMoV nitride barrel with a 1:8 twist rate and a 15-inch freefloat tubular M-LOK aluminum handguard. The upper receiver is 7075-T6 aluminum with an anodized finish, M4 feed ramps, a forward assist assembly, and an ejection port door with rod and spring. This complete upper includes a bolt carrier group and charging handle. An AR-15 A2 birdcage flash hider with manganese phosphate finish and a 1/2 crush washer are included.

Key Features

• 16-inch 4150 CrMoV nitride barrel, 1:8 twist, .223 Wylde chamber
• 7075-T6 anodized aluminum upper receiver, M4 feed ramps
• Forward assist assembly and ejection port door with rod and spring
• 15-inch freefloat tubular M-LOK aluminum handguard
• Carbine length stainless steel gas tube, micro low-profile 0.750 gas block
• AR-15 1/2x28 TPI A2 birdcage flash hider, manganese phosphate finish, with 1/2 crush washer
• AR-15 M4 Mil-Spec aluminum charging handle
• AR-15 complete bolt carrier group, 9310 alloy steel, nitride finish

Perfect For

• AR-15 builders pairing a complete upper with an existing lower receiver
• Shooters upgrading to a freefloat .223 Wylde upper with a micro low-profile gas block
• Builders who want a bolt carrier group and charging handle included with their upper assembly

Barrel and Upper Receiver

The 16-inch barrel is 4150 CrMoV steel with a nitride finish and a 1:8 twist rate, chambered for .223 Wylde. The .223 Wylde chamber supports both .223 Remington and 5.56 NATO ammunition. The upper receiver is 7075-T6 aluminum with an anodized finish, M4 feed ramps, a forward assist assembly, and an ejection port door with rod and spring. An AR-15 A2 birdcage flash hider with a 1/2x28 thread pitch, manganese phosphate finish, and a 1/2 crush washer are included.

Freefloat Handguard and Gas System

The 15-inch freefloat tubular M-LOK aluminum handguard does not make contact with the barrel. M-LOK slots run along the length of the handguard for accessory mounting. The gas system includes a carbine length stainless steel gas tube and a micro low-profile 0.750 gas block.

Bolt Carrier Group and Charging Handle

The bolt carrier group is a complete AR-15 unit covering the 5.56, .223, .300, and .350 platform pattern, built in 9310 alloy steel with a nitride finish. The charging handle is an AR-15 M4 Mil-Spec aluminum unit. Both components are included with this complete upper.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Verify ammunition compatibility with .223 Wylde chamber specifications before use.