I just got a ProWin M4 hop up and a Prommy Soft Bucking for my Polar Star and when I installed everything, the magazines would not feed properly. It would shoot a couple of BBs, and then stop, and I would have to take out the mag and put it back into the gun and this same process would repeat itself. I use E-Mags and Elite Force Midcaps. When I had my stock plastic VFC hop up, I had no problems whatsoever with feeding.
I haven't lubed and cleaned my mags in a while, would that be one of the reasons why its not feeding properly? Or would the issue be the hop up itself?
Some help would greatly be appreciated. Thanks.