Atlas Custom Works AAP-01 Aluminum Outer Barrel Type B, Gold

The AAP-01's factory outer barrel is functional but plain. Atlas Custom Works' Type B aluminum barrel swaps in a finished upgrade that changes how the pistol looks without altering how it shoots. Gold anodizing gives it a distinctive finish that stands out against the usual black or FDE builds.

What an outer barrel upgrade does. This is a cosmetic and protective swap, not a performance mod. It won't change your FPS, range, or accuracy — those come from the inner barrel and hop-up. The aluminum construction is durable and resists the dings and scratches that come from regular carry and holster work.

Fit and compatibility. Made specifically for the Action Army AAP-01 GBB pistol. It replaces the stock outer barrel directly, and the Type B profile matches the standard AAP-01 form factor. If you're running an AAP-01 clone or a different platform, verify compatibility first.

What you're getting. Just the outer barrel. No mounting hardware or accessories beyond what the barrel itself requires for installation. Basic hand tools are all you need to swap it out.

Weighs 60 grams, so the weight difference from the factory barrel is negligible. The gold finish is consistent across the surface and won't chip under normal use.