The Mec-Gar 9mm/40 mag that came with my gun ran perfectly. I also tried several types of 45 mags including McCormick 8 rd. power mags, Wilson 47D, Metalform 8 rd., McCormick Shooting Star 8 rd. mag (their cheaper 45) and an ACT 45 mag. The best were the Shooting Star and ACT. I ran about 75 rounds through the two types with no FTFs or FTEs. I don't know the the Shooting Stars are still available but I believe the ACT mags are the ones Wolverine is selling for about $18 ea. so that looks like the way to go for cheap, dependable mags for this gun.