BEST Fittings Replacement valve assembly for your FX AirGuns Buddy Bottle.

Valve to Fit 220cc, 300cc, 500cc, 580cc Carbon, and 400cc, 500cc Alloy Buddy Bottles M18 x 1.5 Thread

Also suitable for the following FX Air Guns.

• FX Crown, FX Crown Arrow
• FX Impact, FX Impact Mk11, FX Impact M3
• FX Boss
• FX Royale 500, FX Royale 400
• FX Verminator, FX Verminator Extreme
• FX Maverick

And possibly any further models released employing a removable Aluminum or Carbon Fiber Buddy Bottle with M18 x 1.5 threads