Toggle not locking at all anymore?

[F15E_WSO]

Originally Posted by DonVoigt

The bolt notch looks fine when in focus! That's good.
What type mag is that? It doesn't look shaped just right at the top.
Could just be a worn notch in the mag or the mag catch itself, or a defective mag.

Usually the follower is stopped by the feed lips, at about the same time the button stops in its slot.

DonVoigt, the original photo was crap, yes clear here and looks good, so that is good news. As for the type of mag....."uh a black one"? No idea? How could I tell, just poured over it and it has no markings I can see.