Atlas Custom Works 6061 Aluminum 110mm Straight Fluted Outer Barrel for TM Hi-Capa M11 CW GBBP, Red

This is the outer barrel for a Hi-Capa gas blowback pistol, not the complete gun. If you're chasing a specific look or need to swap out a worn barrel, this is the part that changes the profile at the front of your pistol.

What you're getting. The barrel measures 110mm, which is roughly 4.3 inches, and it's machined from 6061 aluminum. The straight fluting removes material along the barrel length, which reduces weight while adding stiffness. You get two O-rings with it, which seat between the outer and inner barrel to prevent wobble and keep the assembly centered.

Compatibility. This fits Tokyo Marui spec Hi-Capa frames. The internal threading is M11 CW, which accepts standard suppressor adapters and muzzle devices for that platform. If your pistol is a clone or aftermarket Hi-Capa, check that it follows TM dimensions before ordering.

What this does and does not do. Swapping the outer barrel changes the external profile and can improve the fit between slide and barrel if your stock one is worn. It does not change the inner barrel, so accuracy and hop-up performance stay the same. You also need the inner barrel separately if yours is damaged or missing.

Installation. This is a hand-fit job. You'll need to ensure the inner barrel seats properly and the O-rings are seated without pinching. If you're not comfortable disassembling your GBB, have a technician do it — improper installation can affect cycling and cause damage.

Red anodized finish. Battery and charger are not included — this is a part, not a complete pistol.