RTG has what looks like a contract overrun on polymer AC-Unity mags. Allegedly these are mil-spec/current mil-issue mags from Bosnia and Herzegovina. 30- and 40-rounders, window and non-window, and 7.62x39 and 5.45x39 mags are all in stock. They also have a speed loader.
https://www.robertrtg.com/store/pc/AC-Unity-b116.htm
Note the metal locking lugs and BHO followers. Classic has AC-Unity mags for sale as well but they are all plastic.
Recoil TV did a nice feature on these, and Rob Ski is also testing them out. YMMV but early reports are these are GTG military polymer mags at Tapco prices. If they're close at all in quality to ((10)) mags this is a great deal.
https://www.robertrtg.com/store/pc/AC-Unity-b116.htm
Note the metal locking lugs and BHO followers. Classic has AC-Unity mags for sale as well but they are all plastic.
Recoil TV did a nice feature on these, and Rob Ski is also testing them out. YMMV but early reports are these are GTG military polymer mags at Tapco prices. If they're close at all in quality to ((10)) mags this is a great deal.