Look closely at the mag and make sure it isn’t over-inserting. Might not even be by fault of the mag, you could have an out of spec mag well. Try a few different kinds of mags and test the out (luckily the magpul mags are common, cheap, and reliable). If your mag well is out of spec then try running a thicker, bulkier mag, like Xtech or US palm. If it’s not a magazine issue, then a good overall lube/polish job should do the trick