I've fired the Caracal a few times and it didn't lock back at the end of a magazine. I'd only shot it casually during off time while working as a RSO. Yesterday (June 9) I spent some serious time using the firearm. I had two double-feeds, a dozen failures to extract, and not once did it lock back on the last round. I even tried just putting one round in each of the three magazines I have and just chambering them and firing. I had the same results with all ammunition used (including Hornady 115 grain Z-max). I'm now close to 1,000 rounds so the "break in period" mantra should be meaningless. My groups are tight (only firing at 12 yards) but my tight group is low a few inches (relative to firing the H&K USP-9 and Vektor CP-1 I had with me on this range day). I found the magazine release difficult to reach quickly and more importantly my magazines didn't drop free. I had to grab them and pull them out. I was in an extremely dusty desert environment...but it's a UAE pistol. Overall Pros: I find it comfortable and accurate. Of less importance I think it is an attractive handgun as well as unique. Cons: Shoots low for me, extraction is finicky, magazine release is too small, magazines don't drop free, at least one mag is bad with double feeds. I'm going to thoroughly clean, oil, and take it to the indoor range with a log book, and also number my magazines. Feedback welcome, disappointed at that moment.