Our Dept. was issued S&W 40C's a few years ago. S&W was the low bidder, obviously. They were a significant improvement over the weapon that they replaced. We also tested the Glock.40. I liked the trigger pull on the Glock better. The Glock was marginally more accurate, but not enough to make a difference in most situations. The first lot of weapons we received were fine. Very few malfunctions, but no night sights. The second order we placed included the night sights. I noticed that all orders received after the initial order had a few other differences. The extractor has been redesigned and the slide is slightly different. The internals appear the same. these later weapons seem to malfunction at a significantly greater rate than the earlier ones, mostly failure to feed and stovepipes. I don't see that much difference in design and think it may be due to a reduction in quality control. We have also had at least 2, that I know of, crack the rear corner of the frame. These appeared to remain able to function but were replaced.