I really feel is RAW holding owners hostage when it come to o-rings .
Kirk, I know many o’rings are the same size but not positive about these! Did you ever find the tiny o’ring size inside your regulator? I’ll ask around and see if anyone knows. In the meantime, maybe try Harbor Freight or Home Depot for the BS017 and try them.
Turns out I had a pack of 18mm o-rings.Nothing like disorganization in the shop .Anyway - Got the gun up and running with no leaks - finally.Gonna have some fun now .