trigger stuck!

[turboboy808]

recently purchased a used mag. has ult and level X and x-valve. the problem is after shooting 5-10 shots the trigger gets stuck after the trigger is pulled (does not reset right away) before it resets (about 10 sec) it sounds like the valve leaks (releases pressure) then i hear a click and the trigger returns to normal. What could this be? A level 10 issue or ULT shim issue? Thanks.

[secretweaponevan]

recently purchased a used mag. has ult and level X and x-valve. the problem is after shooting 5-10 shots the trigger gets stuck after the trigger is pulled (does not reset right away) before it resets (about 10 sec) it sounds like the valve leaks (releases pressure) then i hear a click and the trigger returns to normal. What could this be? A level 10 issue or ULT shim issue? Thanks.

Bolt stick.
Add oil.
Don't over-tighten the frame screws.
(Also be sure to use the largest carrier that doesn't leak.)

[Hilltop Customs]

you can tell if the carrier is too tight if the bolt is hard to move. If your holding the valve upright the bolt should be just about able to slide down onto the valve with only gravity pulling on it....if you have to help it should be very easy to push down.(this is with a worn in carrier o-ring, which you should have....sometimes fresh ones are slightly tighter)