My cousin bought a sigma .40 last night. I know they are notorious for being unreliable and it does have a horrible trigger from the dry fire test I did last night. The bullets rattle in the mag but I've heard some of the x's do the same thing. It has not been shot yet but I cycled some Hornady TAP hp's threw it dry and they never "grabbed" the feed ramp. I think it will function pretty good but I was wondering if there is anything special I need to tell him about this afternoon when I go to help him get the basics down for striping and cleaning. It broke down like a Glock. I look forward to the range trip so I can shoot it.