KWC S W 40 hopup rubber.
 

Okay, so I have a clear version of this gbb pistol.

http://imgur.com/gallery/cMuW63X
Anyone here know if it's hopup rubber is compatible with any others? Mine ripped, need a replacement, don't want to scrap the gun as I've had it for ten years. It works great other than the torn rubber.

if it actually is made by kwc, i dont see it being an issue with aftermarket gbb/vsr buckings