Davidson Defense 22 DARC 20-inch Rifle-Gas 1:7 22 ARC AR-15 KeyMod Handguard Rifle Upper Build Kit

22 DARC 20-Inch Rifle-Gas 1:7 .22 ARC AR-15 KeyMod Handguard Rifle Upper Build Kit

The 22 DARC Upper Build Kit is built around a 20-inch .22 ARC Bear Creek Arsenal HBAR barrel with a rifle-length gas system and a 15-inch Trinity Force ECHO KeyMod handguard. 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 black finish
• 15-inch Trinity Force ECHO KeyMod handguard, black
• A2 GI Birdcage flash hider on 1/2x28 threads 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 A2 GI Birdcage flash hider, rated for .223/5.56, and 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 black finish, and it includes the forward assist assembly along with the ejection port door, rod, and spring. It's paired with a 15-inch Trinity Force ECHO handguard finished in black, using the KeyMod attachment system rather than M-LOK.

Follow all manufacturer instructions and safe handling practices.

Ensure compliance with all applicable federal, state, and local laws.