I found a thread on a US site describing this issue. Apparently the "e" series of VFC have in some cases too much play in the magwell. The result of this is that the mag moves off of the mag catch if the magazine is pushed toward the side of the magwell and it doesn't matter if you replace the catch or not.
The recommended fix was electrical tape on the far side of the magwell. I applied two layers and there is still play in the mag, particularly front to back, but I can no longer extract the magazine by simply pulling on it.
I'm hoping that this has rectified the problem. Seems kinda ghetto that I have to put electrical tape into a $400+ piece of equipment to get it to function properly.
While I'm shimming the inside of the magwell, should the mag be equal distance from the front and the back or should it cheat in either direction to get the best feeding into the hop up chamber?
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