Pump Mag leaking down Barrel

[Demonio]

I have a pump mag that's leaking down the barrel after I pump it. I can fire and it'll stop. And then again when pumped it leaks and stops after firing. Anybody got any ideas?

[hmudd13]

Once cocked, it is just like a regular mag.
Are you using a level X bolt?
If so, put in the next smaller carrier size.
If it's a level 7, chances are it's the power tube spacer, or the power tube o-ring.

Or, (i had this problem on my pump) the rear frame screw was too tight, and somehow caused the leak.

[Rudz]

cant use lvl 10 with pump mags, use the.220 carrier on the lvl 7, then keep going down untill it starts to leak, use the smallest carrier possible

[Demonio]

I'll try the spacer thing after I find mine - i've never had to use it before... Now I need to refill my tank for some more testing.

(and I am definatly using a level 7)