Originally Posted by MstrKey
Sounds like that small oring seals the air path from the asa/reg to the grip frame of the gun. You may even be able to use the same oring again if it's not damaged. The inner one......obviously replace and lube it up.
Thanks, I'll take a look when I get home.
Also, the manual said there were supposed to be 2 spring ends in the HPR. When I opened mine up, I only found one (the one in the cap). I'm going to assume this isn't normal?