Atlas Custom Works Infinity SVP Stainless Steel 5.1 Outer Barrel for Hi-Capa GBB Pistols, Silver

Replacing a worn or scratched outer barrel on a HI-CAPA GBB is straightforward if you know your frame size. The Atlas Custom Works Infinity SVP is built for the 5.1 platform specifically, so it will not fit a 4.0, 5.0, or custom frame. Measure your current barrel or check your slide/frame before ordering.

What you get. Stainless steel construction gives it the weight and feel of a real firearm component. It is not a barrel you shoot through—the inner barrel and hop-up handle accuracy and velocity. This is the visible tube that covers them, and it affects how the pistol looks, balances, and interfaces with mounts or accessories.

Fit and finish. Atlas Custom Works machines these to match the original 5.1 profile, so slide clearance and barrel nut threads line up without forcing anything. If you are running a competition build, speedsoft setup, or just want to swap out a beat-up stock tube, this drops in cleanly.

Before you buy. This is an outer barrel only. The inner barrel, hop-up chamber, and bucking are separate components you keep or upgrade independently. Silver finish will show holster wear and field scuffs faster than a black or FDE coating—plan on light maintenance if appearance matters to you.

Includes only the outer barrel. Installation requires basic hand tools and a clean work surface.