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It has to do with the way the barrel locks up to the slide. In the 1911, the barrel locks up by means of locking lugs cut into the top of the chamber which mate with groves cut into the underside of the slide. This allows the slide to more or less follow the cylindrical shape of the barrel, be...

I have one of the dreaded 1st generation Sigma's in 9mm purchased 7-8 years ago. It is by far the worst gun I have ever owned. While I can say that it has been very reliable (100%, in fact) and is more ergonomic than my Glock, I've also never been able to wring anything better than...

I picked up a PM9 last summer. My "break-in" period was something more like 500 rounds, though I expect that had something to do with me installing the recoil spring ass backwards after breaking the pistol down for cleaning upon bring it home from the shop (whoops!). In any event, it has...

Though I have never actually seen an example of it in person, I have read that guns with alloy frames can and often do tend to develop stress fractures in their frames around the 20k round mark. Given that aluminium alloys are rather brittle, I have no hard time believing this. Though I'm sure...

Been lurking here for a few days and decided to register and post as I thought I might be able to help with this one. I agree that it seems there is too much pressure in the standard springs which is preventing the slide from moving fully backward and thus failing to eject the spent casing...