I was at the range today and decided to do a failure drill. I brought my HK USP compact .45. I loaded an empty .45 brass case in the middle of the magazine. I knew that there was no way an auto would load just a piece of brass. well i was wrong! It loaded the brass and went completely into battery. It also ejected the case just like normal on the rack. This .45 has a guaranteed place on my hip for a long time!