I've just sent my mini back to the factory as it was misfiring about 2 of ten times. There would be a very slight mark on the primer and the same rounds, when reinserted, would fire fine. The ejection system worked fine and recharging the next round would work fine. Again, about 2 of ten would misfire. Any ideas as to why this was ocurring? I hope the factory can find the cause as it is a law enforcement weapon and I cannot affort not to rely on it.