Barty88

I have a agm scar l aeg rifle and I used it fine the other weekend for a full day of skirmish. Just got it out to prep for next game day and the problem seems to be that the mag catch isn't closing on a couple of mags (all of which are the same brand dytac 300 round m4 mags), the problem is they won't keep the mags in place and I am hoping it is a quick fix, I tried tapping them in with a tad bit of force, but to no avail. Any help would be much obliged.