Originally Posted by Aw1195
Hi fellow MCB,
I recently purchase a phantom with a CCI undercocking pump kit and every cock with air (HPA) the pump handle will stay in place, not finishing the complete "maneuver" of cocking back and then automatically pushing the pump handle back into the original position where I can just pump and then shoot. Anyone know how to fix this problem?
Just to be sure, you installed the pump return spring?
There should be a long spring that goes on the cocking rod, and a small partial white washer that keeps the spring from binding in the body. If the washer isn't there, its likely the spring has nothing to push against and is actually moving inside the body rather than providing return force.
If this is a problem only with HPA, that does seem a bit on the odd side..