I've read a lot of mixed reviews. But I bought one anyway. The first 200 rounds through it were Mini-Mags as suggested in the paperwork that comes with it. However, if I was restricted only to Mini-Mags I'd have been pretty unhappy. So far I'v had one FTF and that was the very first round of Mini-Mags, no reason why. But I've shot Thunderbolts, Winchester Power Points, CCI Blazers, and some other Remington plated stuff and no problems. I've had a few duds but that's been the ammo and not the Mosquito. So I'm pretty happy with mine. Extra magazines have become pretty hard to come by. So enjoy it, I do mine.