I was thinking of a way to make a semi-automatic which was simple. I've come up with something like my diagram below. Although I do have one problem. When you pull the trigger and hold onto it air will flow out of the barrel uncontrollable unless I let go of trigger. Any idea to where I can fix this with simple addition of materials?
The idea i took this from was Clide's Semi-Auto GB Gun. But in BB form which should be fairly air efficient, though i doubt the efficiency would be great.
