Davidson Defense Dwarf King AR-15 Pistol Build Kit, 4.5-Inch 1:7 300 BLK, Gauntlet Brace, Dirty .30 Can

Dwarf King w/Gauntlet Arms Brace 4.5-inch 1:7 300 BLK AR-15 M-Lok Pistol Full Build Kit, Witt Machine The Dirty .30 Suppressor

This is a complete .300 Blackout AR-15 pistol build kit with everything you need except the lower receiver. It features a 4.5-inch Bear Creek Arsenal barrel with a 1:7 twist rate, a micro-length adjustable gas block, and a 7-inch M-LOK handguard. The kit includes a complete bolt carrier group, charging handle, lower parts kit, buffer system, and a Dwarf King stabilizing brace. The Witt Machine The Dirty .30 suppressor is included, giving you a ready-to-suppress setup right out of the box.

Key Features

• 4.5-inch 1:7 twist barrel in 4150 Chrome Moly Vanadium steel with Parkerized finish
• Micro-length adjustable skeletonized gas block for cycling optimization
• 7-inch M-LOK aluminum handguard with 1.77-inch internal diameter for suppressor clearance
• Billet upper receiver with enlarged .458-style ejection port and ejection port door assembly included
• Complete AR-15 bolt carrier group compatible with .300 Blackout, 5.56 NATO, .223 Remington, and .350 Legend
• Mil-spec charging handle and complete lower parts kit with fire control group
• Heavy-duty pistol buffer tube with standard carbine buffer and recoil spring
• Witt Machine The Dirty .30 suppressor in 416 stainless steel with graphite black Cerakote finish
• Dwarf King stabilizing brace in black polymer

Perfect For

• Shooters building a .300 Blackout pistol for subsonic suppressed shooting
• Hunters seeking a compact, quiet rifle platform for close-range work
• Home defense builders who want a maneuverable pistol-caliber setup
• Suppressor enthusiasts looking for a complete, integrated solution

Micro-Length Gas System for .300 Blackout

This kit uses a micro-length gas system specifically tuned for the .300 Blackout platform. The adjustable skeletonized gas block allows you to dial in the right amount of gas for your specific ammunition and suppressor setup. The 5.25-inch gas tube and .750-inch gas journal diameter work together to cycle reliably with both supersonic and subsonic ammunition. This is where the micro-length system shines with shorter barrels, keeping the gas port closer to the muzzle for consistent cycling.

Suppressor-Ready Design

The 7-inch M-LOK handguard has a 1.77-inch internal diameter, providing clearance for the included Witt Machine The Dirty .30 suppressor. The Dirty .30 measures 4 inches long and threads on with a 5/8x24 pitch, which matches the muzzle thread on the Bear Creek Arsenal barrel. The suppressor is made from 416 stainless steel with a graphite black Cerakote finish, designed to handle .30-caliber rounds reliably. The entire upper and suppressor combination is balanced for a pistol platform.

Complete Lower Build Components

This full build kit includes everything needed to complete the lower receiver assembly except the serialized lower itself. You get a complete mil-spec lower parts kit with fire control group, heavy-duty pistol buffer tube, standard carbine buffer, recoil spring, mil-spec end plate, and castle nut. The Dwarf King stabilizing brace provides the final piece for a functional pistol configuration. All components are mil-spec compatible and ready to assemble.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. May Dropship from Davidson Defense. Verify compatibility before use. Ensure secure mounting before operation. Use only in accordance with applicable laws.