Leaking out the valve

[Sniper_Boy]

I just bought my MicroMag from someone and it has been working fine. I noticed this weekend though that after I shoot rapid fire, by valve leaks out the back. I can fire one shot and it stops, but the next time I lay down 4-5 quick shots, it does it again. Any ideas? Please help.

[Sledgehammer]

Either your velocity is to high, or you need to replace your regulator seat (Is in the parts kit).