Anyone with an AGM M14 probably found out the hard way that Marui M14 magazines do not fit without some modification. To make a Marui (or compatible) magazine work in the AGM M14, you had to file off a significant portion of the nub on the back of the magazine as pictured below. Otherwise, the out-of-spec magazine catch would not grab onto the magazine.
As you can see, more than half of the square nub that the magazine catch locks on to is gone. My question is this: Will these still work in a Marui M14? If so, will they wobble back and forth due to the smaller locking nub?