6.03 300mm Inner Barrel ( TM GBB cut)

TTI Airsoft 6.03mm High Precision Inner Barrel (300mm / TM GBB Cut)

Unlock the full potential of your gas blowback rifle or long-platform pistol with the TTI Airsoft 6.03mm High Precision Inner Barrel. Specifically engineered for the Tokyo Marui (TM) GBB system, this 300mm barrel is the ideal balance between increased muzzle velocity and surgical accuracy.

Key Features

• 6.03mm Tight Bore Diameter: The 6.03mm bore is widely considered the "sweet spot" for gas blowback platforms. It is tight enough to increase air efficiency and FPS by reducing air bypass around the BB, yet forgiving enough to maintain reliability during rapid fire and prevent jamming.

• High-Grade Material & Finish: Crafted with a high-quality polished interior finish to minimize friction. The ultra-smooth bore ensures consistent backspin application, resulting in tighter groupings and a flatter trajectory.

• Tokyo Marui GBB Cut: Featuring the standard TM-spec mounting notches, this barrel is a direct drop-in for Tokyo Marui GBB pistols, MWS M4 series, and other compatible platforms (such as WE-Tech or VFC) that utilize the TM-style hop-up bucking.