Do you mean the mag on the right doesn’t have a lock plate?

The plate above the orange base pad on the left locks the base plate on.

When you compress the spring and put the plate and base pad on, you may have to slap the bottom of the mag to get it to settle and slip into the base plate to lock it on. Then you’ll just need a small tool to compress the spring and slide the plate off.

When properly assembled, they don’t come off even when dropped. Empty, full or partially loaded.

The baseplates easily slip forward on all three mags.
It is just odd to me that the lock plates don't have a stud/protrusion on them like other mags.
I'm going to try loading them and see if the plate that is there will seat/lock itself into the baseplate.

quote:

Originally posted by CPTKILLER:
CZs are dead on accurate and extremely reliable.

And fun to shoot, carry and feel great in the hand!
I have been a CZ fan since ‘14 and have now a nice variety.

If the plates are installed correctly, I think with the tab up and to the rear, slide the base pad on and then then a sharp slap to the front of the mag will get them to slip forward and then down into the base pad. Hold the mag at the top and slap the front edge against your palm. That’s usually enough to seat the plate and not allow the base pad to slip forward.

When assembled correctly, you will need a small round tool to push the plate up int to the mag slightly to remove the base pad.