Davidson Defense Grimfang 4.5" 300 BLK AR-15 Pistol Build Kit with SBA6 Brace

Grimfang w/SBA6 Brace 4.5-inch 1:7 300 BLK AR-15 Tubular Pistol Full Build Kit

This is a complete 300 Blackout AR-15 pistol build kit paired with The Dirty .30 suppressor. You get everything needed to assemble a functional pistol except the lower receiver, which is serialized and must be purchased separately through an FFL. The kit includes a 4.5-inch Bear Creek Arsenal barrel with a 1:7 twist rate, a 7-inch free-float handguard, an adjustable micro-length gas system, a complete bolt carrier group, charging handle, lower parts kit, buffer tube, buffer, recoil spring, SBA6 brace, and The Dirty .30 suppressor ready to thread on.

Key Features

• 4.5-inch 300 Blackout barrel with 1:7 twist rate and micro-length gas system for optimal cycling with subsonic and supersonic ammunition
• Free-float 7-inch MFFAR7 handguard for accuracy and accessory mounting flexibility
• SBA6 5-position adjustable pistol stabilizing brace for ergonomic control
• Complete mil-spec lower parts kit with standard fire control group and pistol grip
• The Dirty .30 suppressor with 416 stainless steel construction and 5/8x24 threading for immediate use
• Adjustable skeletonized clamp-on gas block for fine-tuning reliability
• Complete AR-15 bolt carrier group compatible with 300 Blackout, 5.56 NATO, and other common cartridges
• Heavy-duty mil-spec 6-position carbine buffer tube with standard carbine buffer and recoil spring

Perfect For

• Shooters building a compact 300 Blackout pistol platform with suppressor integration
• Precision rifle enthusiasts who want subsonic ammunition capability
• Builders seeking a complete kit that eliminates compatibility guesswork
• Users prioritizing accuracy with a free-float handguard and adjustable gas system

Precision-Engineered for Suppressed Fire

The 4.5-inch barrel paired with the 1:7 twist rate is optimized for 300 Blackout ammunition, particularly subsonic loads that deliver superior terminal performance. The micro-length gas system cycles reliably without the excess gas noise associated with longer systems. The free-float handguard isolates the barrel from external pressure, maintaining accuracy shot to shot. This combination makes the platform ideal for suppressed shooting where consistency matters.

Complete Suppressor Integration

The Dirty .30 suppressor is included and ready to use. The suppressor features 416 stainless steel construction with graphite black Cerakote finish, providing durability and corrosion resistance. The 5/8x24 threading matches the barrel perfectly. The 4-inch length keeps the overall package compact while delivering effective sound reduction for 300 Blackout. Subsonic ammunition fired through this suppressor produces minimal noise signature.

SBA6 Brace and Ergonomics

The SBA6 5-position adjustable brace provides a stable shooting platform with multiple length-of-pull settings. The brace is designed to fit your arm for improved control during rapid fire and precision work. The adjustability means different shooters can find their optimal configuration. The brace integrates seamlessly with the buffer tube and carbine-length system.

Lower Receiver Not Included

The lower receiver is a federally regulated firearm component and must be purchased separately through a licensed FFL dealer. All other components needed to complete the build are included in this kit.

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 suppressor compatibility before use. Ensure secure mounting before operation. Use only in accordance with applicable laws.