Exhaust Leak?

[Lckybllr13]

I just got a g7 in a trade and it had a slow leak coming out the exhaust hole in the breech.So i took out the exhaust assembly changed the Orings and lubed it then but it back in.The leak stopped for a day, the next day i get it out of my bag and it leaks again??????any suggestions

[RangerJoe]

your valve stem cupseal is prlly old and or worn. replace it and try again. or try to put a lil lube on cupseal.