The Raptors Airsoft RTQ GBB-95 7mm Steel Enhanced 6.02mm Tight Bore Barrel is a high-performance barrel designed for use in gas blowback airsoft guns. It features a tight 6.02mm bore diameter, which reduces air turbulence and provides a more consistent shot. The barrel is also made of high-quality steel, which is durable and long-lasting. The barrel is designed specifically for the GBB-95 airsoft gun, but may be compatible with other gas blowback guns with similar specifications.