Davidson Defense Nightshift 5-inch 1:10 9MM AR-9 Freefloat M-Lok Handguard Pistol Complete Upper Build

Nightshift 5-inch 1:10 9mm AR-9 Freefloat M-LOK Pistol Upper Build Kit

The Nightshift is a 9mm AR-9 Upper Build Kit built around a compact 5-inch direct blowback platform. The kit centers on a 5-inch slim profile parkerized steel barrel with a 1:10 twist rate and 1/2x36 thread pitch, paired with a black 9mm A2 birdcage flash hider and a black crush washer. The 7075-T6 aluminum anodized upper receiver features M4 feed ramps, a forward assist, and an ejection port door with rod and spring, paired with a 4-inch slim-line freefloat M-LOK handguard in black featuring a full-length Picatinny top rail. BCG and charging handle are not included.

Key Features

• 5-inch slim profile parkerized steel barrel, 1:10 twist, 1/2x36 thread pitch, 9mm
• Direct blowback platform
• Black 9mm A2 birdcage flash hider, 1/2x36, black crush washer included
• 7075-T6 aluminum upper receiver, anodized, M4 feed ramps, forward assist, ejection port door with rod and spring
• 4-inch slim-line freefloat M-LOK handguard, black, full-length Picatinny top rail
• BCG and charging handle not included

Perfect For

• AR-9 pistol builders sourcing a compact 9mm upper build kit with a 7075-T6 anodized upper receiver, 5-inch parkerized slim profile barrel, and 4-inch slim-line freefloat M-LOK handguard with full-length Picatinny top rail, pairing it with their own AR-9 bolt carrier group and charging handle
• Shooters building a compact 5-inch 9mm direct blowback AR-9 pistol platform who prefer to select their own BCG while having the parkerized slim profile barrel, anodized upper receiver with forward assist and M4 feed ramps, and slim-line freefloat M-LOK handguard covered in one kit
• AR-9 PCC pistol builders who want a 9mm upper build kit with a 4-inch slim-line freefloat M-LOK handguard featuring a full-length Picatinny top rail without sourcing components separately

Barrel and Muzzle Device

The 5-inch slim profile barrel is chambered in 9mm and constructed from steel with a parkerized finish. The twist rate is 1:10 and the thread pitch is 1/2x36, which matches the included black 9mm A2 birdcage flash hider. A black crush washer is included. The direct blowback platform design addresses the 9mm cartridge in an AR-9 pistol caliber build without a gas system.

Upper Receiver and Handguard

The 7075-T6 aluminum upper receiver carries an anodized finish with M4 feed ramps, a forward assist, and an ejection port door assembly including door, rod, and spring. The 4-inch slim-line freefloat M-LOK handguard is black with a full-length Picatinny top rail and M-LOK attachment points along the body for accessory mounting. These two components define the exterior structure of the upper assembly on this AR-9 pistol platform.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. BCG and charging handle are not included. Verify compatibility with your specific 9mm AR-9 lower receiver and magazine pattern before use.