retro valve pistion problem

[vespuchie]

ok i change my reg piston because my lvl 10 was leaking out back but now i have another problem thoew now my gun wont shoot at all with medium spring in and all the way cranked down on velocity any sugestions

[Xtreme Chick]

up

[lbonettosd]

Go up to the next size larger carrier. Sometimes it's to tight of a fit and if there is too much resistance on the bolt then it won't cycle.