I bought a reg tester from HUMA that screws into the bottom of the block of HM1000 rifles. The issue is that the brass tip contacts the regulator before the part can be screwed in all the way. (This gauge DOES work with HUMA regs becasue they are shorter than the RAW reg.) Is there some type of seal/washer that I can purchase that I can install over the threaded portion so that the part doesn't screw in as far? (A larger O-Ring would just blow out)
Thanks.
Thanks.