RE: Smith And Wesson Sigma
Abuddy was issued one in .40 cal for His job as a police officer. They ended up trading them in for Glock 22s but he purchased his back from the dealer that took it in on trade. He likes the Sigma better and feels he is more accurate with it then the Glock. Now don't be confused he hasn't said the Sigma is more accurate only that he shoots it better.
I know the older Sigma's used to have a firing pin problem. I know of one officer that carried one with a broken firing pin for about a month before he discovered it had broken. I don't know if they have fixed that problem or not.