Mine is probably 4 years old or so. Not all that old. It works fine it's just that you have to push and wiggle to get it in there where as the factory one goes in fine. Not sure what the deal with it is. Seems to go in easier if you hold the magazine release and then push it in tight and then let go of it. I have the normal magazine release not the extended ones. It does come out just fine though. I've heard of others having this issue too but not sure what magazines they are using.