An original Sigma, he should be paying you to take it away! Horrible gun most likely the worst pistol S&W ever produced. Besides the horrible trigger I have seen very poor accuracy out of the SW9F I have shot or seen shot. Saw one brand new out of the box that 4 different shooters could not hit a 2 liter bottle at 25 yards with. All four were very capable shooters.
Save the pennies and get a M&P if you want a Smith.