[jack_daniels454]

http://www.gunsprings.com/Semi-Auto%20Pistols/SMITH%20%26%20WESSON/SIGMA%20CURRENT%204%20INCH%20SERIES%20PISTOLS/cID1/mID58/dID260

Thanks for the link. I have a .40 sigma as well. I've been looking for a mag spring all over three different towns. I was about to give up and call them directly. It was a easy transition for my S&W to a Glock. One reason I decided to get a Glock, I didn't have to learn a lot of different functions. Both are simple and to the point. Love my sigma, I've carried it for many years. That is till I got my Glock. Now my sigma is on safe duty if I'm home,or when I'm gone my wife keeps it by her side. Either way we got it covered.

 

[jack_daniels454]

Lol I was going to say, mine don't do that. All S&W did was copy the Glock. The older sigma's had the same trigger till Glock sewed them. They are still a lot alike. Next time you have the slide off look at the frame and bottom of slide. You could almost swap slides. I'm not saying the sigma is any better. I've just have more rounds with it. I love all firearms. It's a rush to pull any trigger and it goes bang.