Poseidon Tsunami 114mm 6061 Aluminum Outer Barrel for GBBP, Gold

The Poseidon Tsunami is an aftermarket outer barrel for Glock-pattern GBB pistols. You install it when you want a different finish, a specific thread for muzzle devices, or just the look of exposed metal at the muzzle. This is a cosmetic and accessory-mounting upgrade, not a performance one. It does not change velocity, range, or accuracy.

What you get. The barrel is CNC-machined from 6061 aluminum and measures 114mm (roughly 4.5 inches). This variant is gold. Thread pitch varies by platform and muzzle device, so check your accessory's threading requirements before buying—different GBB platforms use different standards.

Compatibility. Fits Tokyo Marui G17/G18, We G17/G18, and Orion 2 GBB pistols. If your gun is not on that list, measure your existing outer barrel's diameter and thread pitch. Poseidon makes other models for different platforms.

Installation. Swapping an outer barrel on a Glock GBB is straightforward: remove the slide, pull the old barrel, press the new one in. You do not need special tools, but you should verify fit before reassembling the slide. If the barrel binds or the slide does not return to battery, stop and check alignment.

What it does not do. This is not a barrel upgrade for accuracy. The inner barrel and hop-up remain factory stock. It also does not add length to your overall profile. 114mm is the standard Glock outer barrel length.

Includes only the outer barrel. Muzzle devices, thread protectors, and installation tools are not included.