New 'mag owner, air leak, HELP

[Rusty61]

New to the mag world and hoping someone can help me out. I've got a minimag with a benchmark double trigger. When I put moderate pressure on the trigger i get air leaking down the barrel. Gun fires fine as long as I slap the trigger but any pressure other than a full pull causes it to leak. Will also leak once in a while after firing but this stops after 1-2 shots.

Any suggestions?

[Will Wood]

Might be the powertube spacer....Not sure.

[WickeDKlowN]

your not supposed to pull slow on mags, that will lead to short stroking. you might need to change the PT o-rings, or the PT spacer. if you have the video watch it, it might be in there too.

[sicones]

some times when I'm messing around I always pull the trigger real slow and it acts weird is this a bad thing should I stop??

[Rusty61]

Thanks for the help. I put in a shorter power tube spacer (.225) and it solved the problem.