It is very common to find the small O ring in the fill valve to be compressed and rock hard in these guns, it's difficult to remove, be careful not to damage the seal groove in the brass plunger when you remove the old hardened O ring.
It is very common to find the small O ring in the fill valve to be compressed and rock hard in these guns, it's difficult to remove, be careful not to damage the seal groove in the brass plunger when you remove the old hardened O ring.
BSA Super10 addict, other BSA's inc GoldstarSE, Original (Diana) Mod75's, Diana Mod5, HW80's, SAM 11K... All sorted!