Pump minimag leak

[fhawkeye]

Hey guys, I know it's been asked before but in this case; it's only leaking down the barrel when the bolt is not pumped back. I tried trouble shooting in semi-auto but there is no leak (trigger held down or not).

It's a pump-minimag so the powertube's got the spring instead of a spacer if that matters.

[fhawkeye]

It was a problem with the on/off. I replaced all the teflons and on of the rubbers so not sure which but problem solved.

[Spider-TW]

Thanks for the update!