I too purchased a new .40 Sigma in a rush after Obama won the election. I did not do any research, just thought S&W would be great and four magazines and only $329.00 at Academy, what a deal. The guy, Robert, at Academy did not want to let me dry fire, mumbling about video cameras and so on. There were many people waiting so I made the purchase in haste and soon regretted it, until NOW.
After shooting it, I was all over the place,
I couldn't have gotten that stale since retiring from the Navy, having qualified Expert with both the 1911 and the M9, could I. I bought a Bersa .380 and punched ragged holes center target with it and a C9, so it must be the gun. I read about it on several forums and then called LSG, here in Texas and Mr. Smith helping me ship it free of charge under warranty. It only took a little over seven days and I got it back, much better, but still not as smooth or crisp as my other guns, he did reduce it from 12# down to 9#, but still a little gritty. . . more reading.
As the gent above mentioned, I dissassembled then polished all moving, contact parts with a dremel and fine jeweler's rouge, lubed with oil and reassembled, better
, but still disappointing. I subsequently purchased a Stoeger Cougar 8000 .40 from Academy and the nice man let me dry fire it, WOW, nice and smooth.
Later I removed the pig-tail spring only shown in the picture above and cleaned and lubed this time with constant velocity hi-temp moly grease, wiping off the excess. The grease sticks much better to the plastic friction surfaces than oil. Now, Off to the range, WOW, shoots better than a friends G-23 now, he can't believe it either, over 100 rounds and no issues, but smooth clean, light (5-6) pound trigger pulls. Back in the black
, even my 13 yr old grandson likes it best now. I may even consider purchasing a 9mm and doing the trigger job myself, for my wifes personal bedstand defense!!
update, I substituted a ball point pen spring, that I cut down to fit, to replace the larger outer spring. I had tried the single small spring, but the trigger would not reset after a couple of rounds. It now shoot great, with about 5# pull. my groups are soooo much better. I put another 100 rounds through it today, mostly at the 7 and 10 yard lines. 2-3" groups at 7 yds, 3-4" groups at 10 yards all rapid fire, weaver stance. I really am starting to warm up to this pistol after all... But I bought a Bersa Thunder Pro 9 at the gun show this weekend and shot 100 rounds through it today, WOW!!! Shoots better than my Cougar .40 and that's saying something!!