I have two m40A1s. The first, bought used I broke a sear spring in, has since been replaced and works fine now. My other, purchased new went 500 rds without issue. I used it for Black Badge and I had quite a few FTE's the first day. In it's defense it was my first batch of reloads so I that may have contributed. I removed, cleaned and reinstalled extractor. Second day worked great till later half of afternoon when I had another FTE and several FTF. Took home and found a minuscule piece of brass shaving in striker channel which provably led to the FTF's. I love the feel of these pistols in my hand, but not sure if I would use for CCW were we permitted to do so in Canada.