The GTA (Genuine Tippmann Accessory) expansion chamber replaces the front grip of your marker with the expansion chamber, which also looks like a grip itself. This kit includes everything you need to mount an expansion chamber on your model 98 or custom 98. Vertical Adapter, Braided steel hose, expansion chamber and loctite. Even includes easy to follow instructions.

Compatible with Custom 98, model 98, and Custom pro Guns

Not compatible with Platinum Edition Guns