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

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

This is a complete .300 Blackout AR-15 pistol build kit that arrives with everything except the lower receiver. You get a 4.5-inch Bear Creek Arsenal barrel, a billet upper receiver with an enlarged ejection port, a 7-inch M-LOK handguard, a Magpul BTR brace, a complete bolt carrier group, charging handle, lower parts kit, buffer system, and the Witt Machine The Dirty .30 suppressor included. The micro-length gas system with adjustable gas block handles subsonic and supersonic ammunition reliably. This is a purpose-built .300 Blackout platform designed for compact, suppressed shooting.

Key Features

• Complete .300 Blackout AR-15 pistol configuration with included Witt Machine The Dirty .30 suppressor
• 4.5-inch Bear Creek Arsenal barrel, 1:7 twist rate, 4150 Chrome Moly Vanadium Steel, Parkerized finish
• Micro-length adjustable gas system with .750-inch skeletonized clamp-on gas block for ammunition flexibility
• 7-inch aluminum M-LOK handguard with 1.77-inch internal diameter, suppressor-ready tubular design
• Billet upper receiver with no forward assist and enlarged .458-style ejection port
• Magpul BTR brace in black for standard mil-spec buffer tube compatibility
• Complete bolt carrier group made in the USA, compatible with .300 Blackout, 5.56 NATO, .223 Remington, and .350 Legend
• Mil-spec lower parts kit, heavy-duty carbine buffer tube, standard carbine buffer, and all necessary hardware included

Perfect For

• Shooters building a dedicated .300 Blackout suppressed pistol platform
• Those seeking a compact, subsonic-ready configuration with included suppressor
• Builders who want a complete upper and lower parts package minus only the serialized receiver
• Tactical and home defense applications requiring a short-barreled, suppressed rifle

Micro-Length Gas System and Suppressor Integration

The micro-length gas tube and adjustable gas block work together to handle both subsonic and supersonic .300 Blackout ammunition without carrier tilt or reliability issues. The adjustable gas block lets you fine-tune cycling for your specific ammunition and suppressor setup. The Witt Machine The Dirty .30 suppressor threads directly onto the 5/8x24 muzzle, and the 1.77-inch internal diameter handguard provides clearance for suppressor operation without binding or contact.

Billet Upper Receiver and Ejection Port Design

The billet upper receiver features an enlarged .458-style ejection port that accommodates the larger .300 Blackout case without feed or ejection interference. The no-forward-assist design keeps the upper receiver profile clean and reduces weight. The ejection port door assembly comes complete with door, rod, and spring ready to install.

Complete Component Set

This full build kit includes the bolt carrier group, charging handle, lower parts kit with fire control group, buffer tube, buffer, recoil spring, end plate, and castle nut. The lower receiver is not included. All components are mil-spec compatible and made to standard AR-15 dimensions. The Magpul BTR brace attaches to the carbine buffer tube and provides a stable shooting platform for pistol configuration use.

Witt Machine The Dirty .30 Suppressor

The included suppressor is built from 416 stainless steel with a graphite black Cerakote finish. At 4 inches long, it threads 5/8x24 directly onto the muzzle. The .30 caliber design handles both .300 Blackout subsonic and supersonic loads. The suppressor is integral to this kit and arrives ready to attach.

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