jetsiphon said:
I've taken them down and cleaned them. Could it maybe be the mag lips?
*Edit....
When it fails to feed, the round will start to feed into the throat of the chamber and stop. Would maybe giving the feed ramp a little polish help? If so, how do I go about that?
Some have polished the ramp with a dremel tool or even by hand, but a good gunsmith would be the best choice.
I would try a new magazine before doing any polishing of the feedramp.
Are you using factory ammo?
Do you ever drop your mags on the ground? (as done in competition)
When you cleaned your magazines, is it possible that the mag spring was reversed?
Does the feed ramp feel rough to the touch? I check mine each time I clean them and so far they are super smooth right from the factory.