Hi Guys, sorry to say that (http://www.ccsportingarms.com/product.sc?productId=58) is no longer selling the 3k M-57 mags (I have two of these and they run/fit flawlessly). Go to their website and there's a small explanation.
However, I found another site that's selling FACTORY ZASTAVA M-57 mags (no, not Wideners and even a bit less expensive than they're asking!) Here's the link: http://www.dansammo.com/odds.asp They only want $30.95 for one, $55.00 for two and $100 for four and best of all, FREE S&H!!!! Check the pics and you'll see that they say "Magazine for pistol M-57 / cal. 7.62 mm - 1 pc. / Mfg. by ZASTAVA arms, SERBIA" I haven't been able to find a better deal than that anywhere, especially for factory mags. The only con, no lanyard loop on the mag bottom. All I know is what I read and saw, the rest is up to you!
Mk3StenMan
Very cool, thanks forthe update and find... I was about to order more...