Watch your mags - make sure if they're old that they're really USGI or T-57's in a pinch. If you want to buy new, only buy new USGI made by CheckMate and available a 44mag.com. If you're talking Hi cap, (over 20 rounds), the only one I would consider are the new M14 25-round mags also being produced by CheckMate, (CMI) and also available at 44mag.com.... Good luck!