Davidson Defense Concord w/Gauntlet Arms Brace 7.5-inch 1:16 10MM AR-15 M-Lok Pistol Full Build Kit

Concord w/Gauntlet Arms Brace 7.5-inch 10mm Auto AR-15 Full Build Kit

The Concord w/Gauntlet Arms Brace is built around a 7.5-inch 10mm Auto barrel with an M4 contour, paired with a 6061 aluminum pistol-caliber AR-15 billet upper receiver. It pairs a 7-inch free-float M-LOK handguard with an integrated hand stop and an A2-style birdcage flash hider at the muzzle. It runs on a blowback operating system. A PCC bolt assembly, Mil-Spec charging handle, complete Lower Parts Kit, pistol-caliber buffer-system components, and a Gauntlet Arms polymer stabilizing brace round out the rest of the build. The lower receiver is not included, leaving the buyer to select and supply that component separately.

Key Features

• 7.5-inch 10mm Auto barrel, 1:16 twist, M4 contour
• Blowback operating system
• 6061 aluminum pistol-caliber AR-15 billet upper receiver
• 7-inch free-float M-LOK handguard with integrated hand stop
• A2-style birdcage flash hider, 10mm/.40 S&W compatible
• Gauntlet Arms polymer stabilizing brace included
• Complete Mil-Spec Lower Parts Kit and pistol-caliber buffer-system components included
• Lower receiver is not included.

Barrel and Muzzle Device

The barrel runs 7.5 inches long, chambered in 10mm Auto and built from 4150 chrome moly vanadium steel with a Parkerized finish and M4 contour. It carries a 1:16 twist rate and a 9/16x24 muzzle thread. At the muzzle sits an A2-style birdcage flash hider rated for both 10mm and .40 S&W, threaded to match the barrel's 9/16x24 pattern and secured with the included 5/8-inch black crush washer.

Upper Receiver and Handguard

The upper receiver is a 6061 aluminum billet unit built for the pistol-caliber AR-15 platform. Over the barrel sits a 7-inch free-float handguard finished in black, using an M-LOK attachment system with an integrated hand stop.

Bolt Assembly and Charging Handle

The bolt assembly is a PCC AR unit built for compatibility with both 10mm Auto and .40 S&W. A Mil-Spec AR-15 M4 charging handle rounds out the upper's operating components.

Lower Parts Kit and Buffer System

A complete Mil-Spec AR-15 Lower Parts Kit covers the fire-control and lower-control internals needed once a lower receiver is on hand. Behind it sits a heavy-duty pistol buffer tube compatible with AR-15 and AR-style pistols, holding a heavy 9mm-style buffer weighing 8 ounces and finished in black, along with a standard USA-made recoil spring.

Stabilizing Brace

Capping off the rear of the build is a Gauntlet Arms polymer stabilizing brace finished in black. It mounts directly to the pistol buffer tube included with this kit, built specifically for pistol-configured AR platforms like this 10mm build.

Follow all manufacturer instructions and safe handling practices.

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

Lower receiver is not included.