Today at the range I started having trouble inserting my magazines. They would go about half way in and then stop. With a little authority I was able to get them to go all the way in. It started after about 6 magazine loads. It seams to be hanging up on the magazine release latch. If I push the magazine release button in slightly the magazine will go in without any problem. I did clean it last night and again when I got back from the range but the problem still persists. Anyone got any idea why this started to happen?