The TacFire BU3008 8" 300BO Built Upper W/BCG is a complete AR-15 upper receiver assembly chambered in 300 AAC Blackout. Featuring an 8-inch threaded barrel with an A2-style muzzle device and a matching 8" free-float handguard, this upper is designed to drop onto your compatible AR-15 lower and get you shooting with minimal setup. The pistol-length gas system and 1:8 twist rate are tuned for reliable performance with a wide range of 300 Blackout loads.

This upper is well suited for range use, training, and general-purpose 300 Blackout builds where shooters want a compact barrel length without sacrificing reliability. The free-float handguard offers ample space for lights, grips, and other accessories, while the included bolt carrier group simplifies the build process. TacFire’s attention to detail and consistent manufacturing make the BU3008 a solid foundation for your next AR-15 project.

Key Features:

• Manufacturer: TacFire
• Model: BU3008
• Caliber/Gauge: 300 AAC Blackout
• Barrel Length: 8"
• Threaded Barrel: 5/8x24 with A2-style muzzle device
• Firearm Fit: AR-15
• Twist Rate: 1:8"
• Gas System: Pistol length
• Handguard: 8" free-float
• Condition: New
• Weight: 3.78 lbs (approximate shipping weight)