Only one more comment: if you mod it (and I modified mine) you have a dilemma when you go to sell it -- and many of us sell guns, for a variety of reasons.
The dilemma is that the new owner won't know about the history of the mod unless you tell him, nor know what the gun was supposed to be like. And neither of you will know how reliable the gun is.
You will be selling a gun to someone who can no longer return it for service, as the warranty is unlikely to be honored if the springs have been removed or modified -- and a significant part of the resale value of a S&W is that famous customer service.
I agree with the advice that says, wait and shoot it for a while before you modify it. You can modify it -- many do, and enjoy the results -- but then it won't be an ideal SD gun anymore. Lots to think about -- enjoy the darn thing, they are a good value for the money. If you want a shorter, lighter, smoother trigger... consider the SD if you really like the ergos of the Sigma... or consider the M&P... and the Apex mods, or the Burwell trigger job... lots of options for the M&P!
Have fun, and be safe.
Exactly. That's why I have ALL the original springs, labeled and contained in a baggy. IF I ever decide to sell the pistol, I will return the springs to the pistol, IF the new owner wishes. They may very well be buying it BECAUSE of the mods.
I doubt that my mods will preclude my sigma from being used as a self defense weapon. The only reason that would happen is if I was to replace a spring with one that is way too light/weak. I will NOT use a weak spring, but I will make it lighter utilizing a combination of work on the weapon. The trigger does NOT have to be hard for it to be a SD weapon. But, many of you are correct in assuming that some folks may make the weapon too weak to maintain its reliability. Like I said before, mine will be used primarily for plinking, to maintain and improve my shooting skills. I don't need a hard trigger in order for me to know that my finger is pulling the shots off to the left.
Having a hard trigger does not make the pistol the perfect SD weapon. If so, folks would not be carrying 1911's or other single action weapons. This weapon has two safeties, that are simple but adequate. You can easily half the trigger pull and still have a safe and possibly reliable weapon. I bet there are hundreds of sigma owners that have trigger mods and still have reliable weapons. As a matter of fact, those on here that say their trigger pull is easier now that they have fired thousands of rounds, are proof. They have smoothed the friction parts by repetition, and the springs have weakened from use. If they are not replacing their springs, then they have essentially the same action that those of us that have modified our weapons.
If you want to stand by the notion that a hard trigger pull makes one a better shot, fine. I didn't buy the sigma to make me a better shot. The only competition I do is in the back yard. I don't need to be an expert shot to put down a bad guy or a coyote if it wanders too close.
I am not disagreeing with the concept that many of you claim the hard trigger pull will make you a better shot. I am just saying, that may not be the reason for purchasing a pistol. I will also say that if you are a good shot with a hard trigger, then you are a better shot with an easy trigger pull. That's just logical, right?
A machine may be good quality and work fine from the factory. There is NO machine that can not be improved. I bought the sigma because it had a good feel and I got it cheap. If you like it the way it was made, then keep it that way. The post was related to possible mods to the weapon. I don't like flash lights on a pistol, but I won't tell anyone not to do it, because I don't like it. I don't like shiny guns, but that is my preference, and I won't tell someone not to shine their pistol.
My advice if you want it, regarding mods: Save your stock parts and make changes to spare parts.
