Main thing with the sigma the trigger pull is around 12 pounds where the glock is 5.5 I had a sigma for awhile it's not a horrible gun for the price but I traded it for the M&P vast improvemnt then traded it for a glock
I had a sigma, sold it, hated it. Terrible trigger pull (long,gritty, and hard), and mine was a jamming SOB. For a short time I worked for a PD that had them, they were just like the one I had, luckily they traded them in for Gen 2 Glocks quickly.
Yeah I know what you all mean by the trigger pull. I own the sigma and really want to buy a glock. I went to cabelas today and they had a g17 and 19 (the 2 that I have been eyeballing the most) and my stupid compulsive buyer side almost got another sigma just to buy another pistol. Thank God I didn't.