Air leak in bolt

[bradbhs_10]

I shoot my gun and everything shot air shoots out the bolt bad. I have tried 200-300 psi and nothing works. I just don't know why air would be leaking out the top of the bolt.

[oldironmudder]

Sounds like your cup seal isnt sealing good. Either swap out with a new one or air your marker on full auto & almost empty a tank then listen for the leak.