Davidson Defense Blackwell 20-inch Rifle-Gas 1:7 22 ARC AR-15 M-Lok Handguard Rifle Upper Build Kit

Blackwell 20-Inch Rifle-Gas 1:7 .22 ARC AR-15 M-LOK Handguard Rifle Upper Build Kit

The Blackwell Upper Build Kit is built around a 20-inch .22 ARC Bear Creek Arsenal HBAR barrel with a rifle-length gas system and a 17-inch free-float M-LOK handguard with integrated quad rail sections and QD mounts. BCG and charging handle are not included.

Key Features

• 20-inch Bear Creek Arsenal HBAR barrel, 1:7 twist, Black Nitride finish
• Rifle-length gas system
• 7075-T6 aluminum upper receiver with M4 feed ramps, anodized finish
• 17-inch free-float M-LOK handguard with integrated quad rail sections and front/rear QD mounts
• 6-prong steel muzzle brake on 1/2x28 threads, Black Oxide/nitrided finish, with 1/2-inch black crush washer
• BCG and charging handle are not included.

Barrel and Gas System

The 20-inch Bear Creek Arsenal barrel is machined in an HBAR heavy profile, carrying extra mass down its length to help manage heat and hold accuracy across longer strings of fire. It's finished in Black Nitride for wear and corrosion resistance, and its 1:7 twist rate is on the faster end for .22 ARC, giving it the stabilization needed for a wide range of bullet weights. The rifle-length gas system runs through a stainless steel gas tube and a micro low-profile steel gas block with a .750-inch diameter, matched to the barrel's .750-inch gas journal. At the muzzle, 1/2x28 threads carry the included 6-prong steel muzzle brake, finished in Black Oxide/nitrided and built to the 5.56/.223 thread pattern, secured with the supplied 1/2-inch black crush washer.

Upper Receiver and Handguard

The upper receiver is machined from 7075-T6 aluminum with M4 feed ramps and an anodized finish, and it includes the forward assist assembly along with the ejection port door, rod, and spring. It's paired with a 17-inch free-float M-LOK handguard finished in black, featuring integrated quad rail sections along with front and rear QD sling mounting points built directly into the handguard.

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