Mag Couplers?

[DaveHH]

If the carbine has a serious flaw, it has to be the magazines. Two tiny nubs are all that is holding the thing in the weapon. They are a wear item as the nubs eventually start to wipe off. Maybe that's why they made multi millions of the magazines. You can use the 30s without the last type of mag catch but they flop around a lot but still work fine. Compared to say an M14 or 16 magazine they are junk. I actually liked the AK style mag catch on the M14. Direct, secure and obvious.