I have a chance to get it real cheap. I'll be the 4 th owner I shot the gun a few days ago. The first time I pulled the trigger it didn't go bang. I did not pull the trigger near hard enough. I do own 4 rifles and three shotguns hunt and shoot all the time. Have owned a couple of hand guns in the past never had the pleasure of pulling the trigger and no bang because I didn't pull the trigger hard enough is this normal and if not what should I check for? I know a couple of the owners and they say it has not been shot a hundred times and nothings been done to it. Small town.

They do pull harder than most.
But that sounds extreme.
There are some threads on here about trigger jobs and trigger mods but if it is that extreme u might want to contact S&W.

I have the 9VE and the 40VE, while they do have a longer and harder trigger pull, I have yet to have it fail to fire. I have used alot of the cheap ammo to the high dollar +p stuff and that is the one thing that can be said about the Sigma, it should and will alway go bang. I would contact S&W ad see what they say. Also have you already bought it?

No I have not but looks like I will to help a friend out. It does go bang every time you just have to squeeze the trigger way harder than any gun I have shot it may be alright. I just was not prepared for such a hard trigger. And long pull it feels like it starts out normal and gets harder the farther the trigger is pulled.

That's normal for the Sigma.Just feed it any ammo you want and it gets better the more you shoot it. Also,you can dry fire it while watching tv,sitting on the toilet,reading,etc.

If you use a long, slow, deliberate "target" pull, the Sigma's trigger will object to this treatment. It likes one deliberate pull all the way to the rear with no stopping or hesitation. Concentrate on a smooth pull all the way while keeping the front sight on the target. This will take a bit as you use some new muscle combinations, but the Sigma will reward you with decent performance.

If it is still too hard after a few range sessions, call S&W Customer Service and see what they can offer. You are not the original owner, but they may be able to work with you.

I replaced the "Striker Spring" on a 9 mm Sigma pistol last summer, and that gun had a terrible heavy weight of pull, around 16 lbs.
A call to Wolff Gunsprings got the parts we needed for the job.

The spring to replace is up inside the action, surrounded by sleeves of ballistic type plastic.
Care must be taken when disassembling, because those plastic parts are easily damaged if forced.

I went online to YouTube, and found a couple folks had already beaten a path to success, followed their instructions, and We were rewarded with a reasonable 7 lb weight of pull, and reliable primer ignition.

Do Your homework first if attempting to swap springs on the Sigma pistol, and exercise patience.
It's actually quite easy, once You've learned how to disassemble/assemble.

Hope this helps!

Yes I shoot with a slow pull like shooting a rifle nice and smooth I think it is me I was not ready for that kind of pull . I'm going to get it in a couple of weeks clean it good and shoot a lot of rounds through it and see what happens,

BTW, here's a link to those "Striker" springs:
Springs for SMITH & WESSON M&P SERIES - 9mm, .40S&W, .357 SIG Semi-Auto Pistols

Yes I've done quite a bit of homework. I'll will continue to do so thanks for the link to Wolff for the springs.

Don't waste ammo, mod it or forget it.

Hey all,
New member here.
Try this out. Did the mod to SW40VE works great now. Not to mention improved accuracy on the range.
SIGMA Trigger Fix DIY Spring Mod SW40VE SW9VE Smith & Wesson Walk through Beginners - YouTube

Great video, but I don't know about putting a spring in that he just happened to find after trying several others that didn't work.

I seen another video on youtube of just removing the outer spring and tossing the cam spring. And that is suppose to be a lighter pull yet, around 6 to 7 pounds. I will give that a try next time on the range.
And post results.

Yea I've seen many videos on it. And I've read a lot. I think removing the pig tail spring and changing to the Wolff striker spring will be what I try.

Well I'm about to get the 40VE this week, so yall let new know how it goes. I've heard changing the striker spring causes eject and firing problems? And the other method fails to allow trigger reset after 100 or so rounds .... Anyone care to shed any light on this that has had TRUE success with it please chime in

Vector16 has over 20K rounds thru his Sigma with the trigger mod and says he has had no problems,so far.Do a search using his screen name and you can read his results.

I myself will leave mine just as it is.With over 2500 rounds thru mine the trigger is very smooth and is getting better the more I feed it ammo!

I can't search for some reason. Im mobile and it's not too mobile friendly with those sections. Does he have a write up, or could you possibly post a link to his info

I don't know what he has done to his. But he has a high round count. Maybe he will post what he has done to his.

I have left both of mine just the way they were made by S&W and love them. Never had a problem and as Ruger Nut has stated, both of mine have butter smooth triggers and are better everytime I shoot them. I am not sure about the mods, people say that they work and I have no reason to doubt them, but you do have to remember that this pistol was made to be a good SD/HD pistol and not a comp shooter and the trigger pull is the safety. If you are wanting to shot in comps, then the M&P is better, but for the role that it was made, you can not get a better, more reliable pistol. Good luck with your purchase and I hope that you enjoy it as much as the rest of us do.

John

Hi All,
I just did the 2 spring removal on my SW9VE and all the gritty feel is gone and the pull is MUCH better!!! Here are the instructions I followed, it took about 20 mins and was very easy. This is my first gun and I never even fired one before I got this one 3 weeks ago. Here's a link to the page that has the info.

Simple, Zero-Cost Fix for your S&W SIGMA Heavy Trigger Pull

I do suggest once you take the sear out you take some extra pictures of it. I'll be taking it to the range tomorrow and will post the results when I get back.

Thanks,
Joe

yup, and that 'll do'er. Be sure to use mome ploymer oil where the metal contacts the inner part of the sear block and you'll get a really smooth pull. You can also use WD-40, the WD-40 will loosen up the spring you left in and take the trigger pull down even further.
Congrats on your first smithing operation.

I don’t mean to be critical (for all I know this could be ok) but I was always told not use WD-40 in or around firearms. Reason being that it gums up and subsequently attracts dirt and grime. Have you done this for any length of time? Just curious to see if you noticed any buildup of gunk in this critical area.

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Si vis pacem, para bellum

I have been using WD-40 on guns since before I can remember. From what I can remember, WD-40 and BreakFree are the same thing. WD costsabout $2, BreakFree costs about $6. Build up is one of those things you have to be pretty careless and distracted from anything to even experience. I could see you getting build up on a more complicated gun, maybe. I personally do not ever seen build up on any of my firearms, EVER. After I shoot any of my guns the first thing I do when I get home is thuroughly clean them. All of them are cleaner as after the first time they were cleaned after I brought them home from the gun shop. They all look and perform as new. I suppose if you never cleaned you gun after shooting it you would get some gunk there after using WD-40, however, if you did not clean your gun yopu would get gunk build up regardless from the regular gun oil.
The WD-40 is just a very fine lube and gets into areas regular gun oil would not. If you put gun oil between metal and polymer it will actually make it have more friction vs. WD-40 which does not.

What the heck, I'll give it a try and save a few $$ in the process.

__________________
Si vis pacem, para bellum

Speaking of saving a few bucks, Instead of buying Gun grease for $8 a tube, go to your locan Auto parts store and get a tub of High temp. grease for $2. Not the white stuff but the regular high temp grease. Its the same stuff and you'll have "gun grease" for the rest of your natural born life.
I do not reccomend using WD-40 in the bore. Its not that it will not work, its that I have never done it.

While I won't use WD-40 to clean my guns, I do use it to wipe down the barrel of my hunting rifle after it's (with me) been sitting in the rain or snow.

I'm on the fence about the whole issue. On one side WD-40's website says it's safe for all sorts of surfaces and I've used the stuff for years in other applications. On the other side, if I'm not mistaken, WD-40 is a degreaser which may be counter-productive to applying any grease or lube in the future. And it dries to a film that helps lubricate. Is there a build up after years?

Since I don't know and there are conflicting opinions, don't feel I save that much money not to use products that were made for the job.

WD-40 = water displacement.

I spray my soft gun cases on the inside with WD-40 that hold my rifles.

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How many guns are too many?

I am not saying to use the WD-40 to replace your lube you would normally use on parts like your slide rails, bore or barrel, that is not what I am saying at all. For areas where springs are involved. Likie in the sear block with the trigger spring on your Sigma, or on the striker spring, that is all. I don't see or get build up on my guns. If I were not going to be shooting every week to every other week or store them for months at a time I would clean the guns thuroughly and apply a layer of grease to all metal parts. Then when I take them out of storage clean them, get the grease off, lube the gun and then go shoot, hunt etc, get home, clean, grease store.
My Sigma and most of my other pistols get shot every couple of weeks and then cleaned.

So, as a rule of thumb, don't use anything flamable where it is explosed to direct fire. Springs do not come in contact with fire so WD-40 is fine to use.