Hi All, I've been given a Record Champion pistol to try and fix for the owner.

I've managed to strip it and the very strange oval piston seal appears badly damaged; it looks like the consequence of dry firing. I've tested the piston unit in the compression chamber and it doesn't produce any form of seal due to its condition.

Parts don't appear to be available and there's very little information on how to strip and rebuild the gun as to be honest I found it difficult to get apart.

I'd be grateful for any help or suggestions, especially knowledge of servicing these.

Thanks

BM