TacFire Complete Upper Features The TacFire Complete Upper is engineered around a 10 barrel chambered in .45 ACP giving builders a compact pistol caliber carbine platform suited to home defense and recreational shooting. The 1:16 twist rate is matched to the heavier .45 ACP projectiles stabilizing them through the shortened barrel length for consistent accuracy at typical engagement distances. A black nitride barrel finish provides excellent resistance to corrosion heat and fouling extending service life compared to standard phosphate coatings. The slick-side upper receiver keeps the profile clean and lightweight simplifying the addition of handguards or rail systems during a build and the threaded muzzle end allows shooters to mount a compensator or linear device to tame recoil from the blowback action. This upper ships complete with a bolt carrier group and charging handle already installed eliminating the need to separately source and fit those components. That makes the assembly essentially drop-in ready for anyone pairing it with a compatible AR-15 pistol caliber lower. The included hardware is matched to the .45 ACP blowback operating system ensuring proper function straight out of the box without the guesswork of mixing and matching parts from different manufacturers. Builders can still customize further by adding their own handguard or rail section to the slick-side upper tailoring the final build to their preferred accessories and grip style. For builders assembling a dedicated .45 ACP carbine or pistol the TacFire Complete Upper offers a straightforward path to a functional firearm for sale at GrabAGun. TacFire Complete Upper Specifications Manufacturer: TacFire Model: Complete Upper Caliber: .45 ACP Barrel Length: 10 Barrel Finish: Black Nitride Twist Rate: 1:16 Includes: Bolt Carrier Group Charging Handle Color: Black Available At: GrabAGun