Has anyone had any experience with these?
$18 bucks
http://www.zahal.org/products/fab-defense-vz-58-window-30-magazine-ultimag?path_parent=218295

Correct me if I am wrong, but isn't FAB "Mako"?

If so, I would touch a mag from them with a 10' pole.

Some videos and info over here:

http://www.czfirearms.us/index.php?topic=80185.0

So good for plinking and not going to war. Disappointing but good to know.

Maybe some day a gen 2 with metal tabs will come out.

I've read two online reviews of them, so far they seem to work. Neither has anything negative to say, so at least they appear to be in spec.

FAB is made/owned by Mako. I have a few accessories & some AR mags made by Mako, no complaints. Unlike others, all my 20 & 30 round Mako mags run fine in all my rifles.

The surplus aluminum mags are still available for $15, or were anyways. I think the new production aluminum mags are around $35, so if these FABs hold up they're a nice inexpensive option.

If FAB ever makes these in 20s I'll whip my credit card out so fast it'll catch on fire...

FAB Defense is the manufacturer out of Israel.  Mako Group is just the authorized US importer and distributor.

Give me some 20 rounders please!