TacFire AR-15 Pistol Build Kit 300 Blackout 7" KeyMod Black Steel

The TacFire SSPK300LPK7K delivers a complete foundation for building a compact 300 Blackout AR pistol platform. This kit combines precision-machined components with KeyMod rail compatibility for maximum customization potential. Builders get everything needed for a reliable short-barrel build optimized for close-quarters performance.

What Makes This Different

Unlike basic build kits that force compromises, this system integrates a 7-inch KeyMod handguard with a matched barrel profile for optimal balance. The 300 Blackout chamber handles both supersonic and subsonic ammunition effectively. Steel construction throughout critical components ensures consistent lockup and timing across thousands of rounds.

Key Features

• Complete pistol build kit with 7-inch KeyMod handguard system
• 300 Blackout chambered barrel with carbine-length gas system
• Black steel finish resists corrosion and wear
• KeyMod attachment points for lights, grips, and accessories
• Standard AR-15 lower receiver compatibility
• Includes gas block and tube assembly
• Mil-spec threading and tolerances throughout

The 300 Blackout caliber excels in short-barrel applications where 5.56 loses effectiveness. This configuration maintains reliable cycling with both 125-grain supersonic and 220-grain subsonic loads. The KeyMod rail system provides multiple attachment points without adding unnecessary weight to the front end. Steel components handle the higher pressures and temperatures generated in compact builds.

Technical Specs

• Caliber: 300 AAC Blackout (.300 BLK)
• Barrel Length: 7 inches
• Handguard: KeyMod compatible rail system
• Gas System: Carbine length
• Finish: Black steel coating
• Threading: 5/8-24 TPI muzzle threads
• Compatibility: Standard AR-15 lower receivers
• Includes: Barrel, handguard, gas block, gas tube

This kit provides the essential components for builders who demand reliability in a compact package. The proven 300 Blackout chambering delivers superior terminal performance compared to 5.56 in short barrels. Quality steel construction ensures consistent performance across varied ammunition types and environmental conditions.