Davidson Defense Dwarf King AR-15 Pistol Build Kit, 4.5-Inch 1:7 300 BLK, SBA5 Brace, Witt Dirty .30

Dwarf King AR-15 Pistol Build Kit, 4.5-Inch 1:7 300 BLK, SBA5 Brace, Witt Dirty .30

This is a complete .300 Blackout AR-15 pistol kit built around a 4.5-inch barrel with a freefloat M-LOK handguard, SBA5 adjustable brace, and Witt Machine Dirty .30 suppressor. The Bear Creek Arsenal barrel uses a 1:7 twist rate optimized for heavier subsonic loads, paired with a micro-length gas system and adjustable gas block for tuning. Everything you need to complete a lower receiver is included, from the complete BCG and charging handle to the lower parts kit, buffer system, and receiver hardware.

Key Features

• Bear Creek Arsenal 4.5-inch 4150 CrMoV barrel, parkerized finish, 1:7 twist rate for .300 Blackout subsonic and supersonic ammunition
• Panhead billet upper receiver with enlarged .458-style ejection port and ejection port door assembly
• 7-inch freefloat tubular M-LOK handguard, suppressor-ready design with 1.77-inch internal diameter
• Adjustable skeletonized clamp-on gas block, .750-inch diameter with micro-length gas tube
• SB Tactical SBA5 adjustable pistol brace, black, six-position carbine buffer tube
• Complete AR-15 bolt carrier group, mil-spec charging handle, complete lower parts kit
• Standard carbine buffer, recoil spring, mil-spec receiver end plate and castle nut
• Witt Machine Dirty .30 suppressor, 4-inch length, 416 stainless steel, graphite black cerakote, 5/8x24 thread pitch

Perfect For

• Shooters building a .300 Blackout pistol platform for subsonic or supersonic shooting
• Hunters and sport shooters wanting a compact, maneuverable AR-15 pistol
• Suppressor enthusiasts pairing a short-barreled pistol with sound reduction
• Builders seeking a complete kit with minimal additional parts required

Dwarf King Configuration

This kit combines a short-stroke micro-length gas system with a 4.5-inch barrel optimized for .300 Blackout performance. The 1:7 twist rate stabilizes heavier subsonic and supersonic ammunition reliably. The freefloat handguard design eliminates barrel harmonics interference, supporting consistent accuracy. The adjustable gas block allows tuning for suppressed or unsuppressed shooting, reducing felt recoil and controlling bolt carrier speed. The Panhead billet upper and enlarged ejection port ensure reliable case ejection in either configuration.

Suppressor-Ready Design

The 7-inch freefloat M-LOK handguard is engineered to accommodate suppressor use without clearance issues. The Witt Machine Dirty .30 suppressor threads directly to the barrel's 5/8x24 muzzle. The tubular handguard profile maintains a compact footprint while providing mounting real estate for accessories. The 1.77-inch internal diameter allows suppressor integration without requiring special mounting solutions.

Included Components

This is a complete pistol build kit. Included are the upper assembly, complete bolt carrier group, charging handle, lower parts kit, buffer tube, buffer, recoil spring, receiver end plate, castle nut, SBA5 brace, and Witt Machine Dirty .30 suppressor. Lower receiver not included.

May Dropship from Davidson Defense

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