Davidson Defense Shortshot 300 BLK AR-15 M-LOK Pistol Kit with BTR Brace, Dirty .30 Suppressor

Shortshot w/BTR Brace 4.5-inch 1:7 300 BLK AR-15 M-Lok Pistol Full Build Kit

This is a complete .300 Blackout AR-15 pistol build kit with everything you need except the lower receiver. It comes with a 4.5-inch Bear Creek Arsenal barrel, a free-float M-LOK handguard, a Magpul BTR brace, all internal components, and a Witt Machine The Dirty .30 suppressor ready to mount.

Key Features

• Bear Creek Arsenal 4.5-inch HBAR barrel in 4150 Chrome Moly with 1:7 twist rate for .300 Blackout subsonic and supersonic ammunition
• Free-float 7-inch M-LOK aluminum handguard with 1.77-inch internal diameter for modular accessory mounting
• Adjustable skeletonized gas block with micro-length gas system tuned for short-barrel .300 Blackout cycling
• Complete AR-15 bolt carrier group made in the USA with multi-caliber compatibility
• Magpul BTR pistol brace on mil-spec carbine buffer tube for stable shooting platform
• Witt Machine The Dirty .30 suppressor with 416 stainless steel construction and graphite black Cerakote finish
• Standard mil-spec fire control group, charging handle, and lower parts kit included
• 5/8x24 muzzle threading for suppressor and accessory compatibility

Perfect For

• Shooters building a compact .300 Blackout pistol platform
• Suppressed shooting with subsonic ammunition
• M-LOK accessory ecosystem builds
• Shooters wanting a complete upper and lower parts solution

Suppressor Ready Platform

This kit ships with The Dirty .30 suppressor already mounted and ready to use. The 4.5-inch barrel paired with the micro-length gas system is optimized for .300 Blackout performance, especially with subsonic ammunition. The 5/8x24 muzzle threading ensures compatibility with a wide range of .30 caliber suppressors and muzzle devices. The free-float handguard design minimizes barrel contact, which helps maintain accuracy when running suppressed.

M-LOK Modular Mounting

The 7-inch free-float M-LOK handguard gives you multiple mounting points for lights, lasers, grips, and other accessories without affecting barrel harmonics. The tubular aluminum construction keeps weight down while maintaining rigidity. M-LOK slots run the full length of the handguard for flexible accessory placement.

Complete Build Kit Components

This full build kit includes the upper assembly, bolt carrier group, charging handle, lower parts kit, buffer tube, buffer, recoil spring, end plate, castle nut, and Magpul BTR brace. Lower receiver not included.

Witt Machine The Dirty .30 Suppressor

The included suppressor features 416 stainless steel construction with graphite black Cerakote finish. At 4 inches long, it's compact enough for a short-barrel pistol while still providing meaningful sound reduction. The suppressor is threaded 5/8x24 to match the barrel and can be removed or swapped with other compatible .30 caliber suppressors.

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 not included. May Dropship from Davidson Defense. Verify suppressor compatibility before use. Ensure secure mounting before operation. Use only in accordance with applicable laws.