Gamo Urban problem

[Xraycer]

Orings here

Are you sure about the O-ring size?

006 fit perfect on my Urban bolt. I compared it to the OEM one and it appeared a perfect match.

I could be wrong though; there's a 1st for everything...

I just got in my order of 006, and they fit nicely on the bolt probe. Thanks, Victor!
$4.50 for a pack of 50......this should hold me for a little while