I know that that spring would make it so that you would have to manually push your trigger forward and then pull for it to shoot. Basically all it does is reset the rotator (#4) in the sear. At that point it should shoot after you pull the trigger, barrel or not. What could be happening is the rotator isn't engaged with the sear, because there isn't a return spring to reset it, and in removing the barrel you could have inadvertently moved the trigger enough to reset the rotator.
__________________ Anonymous Assassins Paintball TeamJust look for the pink shirts MCB Feedback SpecOps Feedback Laws of Thermodynamics; 1) You cannot win, you can only break even. 2) You cannot break even.