Thought about cutting an o-ring groove.
Quote from: avator on September 11, 2017, 08:08:46 PMThought about cutting an o-ring groove.I have one a re-built with the MAC 1 kit that is actually blowing the bolt back with over 4 pumps, the detent and bb spring is in there, just have not figured out why it does this? none of my other stock set-up guns do this, perhaps because the thing probably has a million shots on it