Update Sigma Trigger job

[btmlinedan]

has anyone been able to get rid of the "gritty" feeling in the trigger pull?

I have polished the trigger internals with a little better feeling but nothing crazy. if you take the slide off and pull the trigger that is when I REALLY feel the grit (try it out).

I'm not sure if it's the the spring (above the trigger) grinding in place in the plastic housing track. I can take a picture to show, just curious if those that are going the DIY method had made it "smoother" opposed to being extremely light

 

[Rick-F]

" . . . extremely light " a term not often used in the context of a Smith & Wesson Sigma trigger pull.

I polished everything in the sear block and stoned smooth the trigger linkage parts; trigger pull is long and smooth-- but certainly not light, even with the pigtail spring removed.

 

[btmlinedan]

did you do 1 at a time or both at same time? im curiuos if the trigger linkage parts are more of a help on the "smoothness" of the pull.

maybe i'll just go home on my lunch and take a few pictures of what i am talking about as i don't know all the 'technical' names.

where did you pick up your block and stone?

 

[doc540]

"has anyone been able to get rid of the "gritty" feeling in the trigger pull?"

Yes, S&W will fix that for you. They've done two for me, a used one and a brand new one. Both times they sent me a prepaid shipping label to return it to Springfield, MA.

It arrived back to me within 10 days, no problems, no hassles.

That's fantastic customer service right there!

MUCH smoother which feels lighter but isn't according to my trigger gauge.

In fact, my wife shot the new one last Saturday at the range. With a red laser, she easily shot center mass at 7-10yds her first time to have it in her hands. It's our downstairs "house protection firearm" and she's very confident with it now.

Best $250 I've ever spent on home protection.

 

[btmlinedan]

have you taken it apart to see exactly what they worked?

 

[doc540]

have you taken it apart to see exactly what they worked?

No, and I doubt I will.

I have visions of little springs and parts launching over my shoulder into the carpet.

Both of them felt the same upon return: smooth with crisp/clean break.

Like night and day.

Again, I can't say enough for S&W customer service. They were polite, eager to help, and just, flat took care of business both times!

I will buy from them again.

 

[btmlinedan]

well next time you take the slide off to clean it, pear around and see if you see anything different. i'd be anxious to see exactly what they do

 

[vhend]

Maybe you're a newbie ... I don't know, but, I get that impression. So, perhaps you don't know, but most seasoned shooters have their "actions" smoothed, polished, and lightened. It's just part of what you do when you get a new gun and break it in!

Nope. I just finished touching up my PPS. The work I would do to improve Smith's improvements would be a "secret" as factory work would've already been done.

I would carry this gun on fishing trips and such, so I would not want to be the only one to have "touched" the action.

That is why I said I was bummed.

 

[btmlinedan]

figured out where the 'grit' is coming from, took pics last night, but monday night football took over and haven't uploaded them. polished a few more parts, got a "little" better but still not perfect. just gotta take things slow so, because once it's gone, its gone!

 

[bbaaspencer]

Gritty trigger returned to S&W for repair, wouldn't fix it!

I had jamming problems with my 9mm Sigma and also noted the trigger was very hard and not smooth when I returned it to S&W for repair. They fixed everything, except the trigger. They never even noted it on the repair order. The trigger issue was in writing, with the Sigma, so they completely ignored the request.

Hey, VHEND, just found my receipt. It was returned from S&W in June. Notes on repair order: modified barrel, replace extractor.

 

[vhend]

bb- When did you send it in?

 

[Walthernut]

I've been sifting thru all the issues with a Sigma since it's the first new gun I've purchased in a long time and my first S&W semi-auto, .40 S&W.
I sent my Sigma to S&W because I thought my trigger wasn't recovering.
S&W turned it around quite quickly and did a super job.
They listed my complaints as trigger recovery and feeding on their work order. The fixes were as follows:
1. Barrel modification (don't know what that was)
2. Adjust trigger pull.
3. Replaced sear housing blk assy
4. Inspected/tested & passed
I've been to the range, had vision problems (ongoing) in my shooting eye and still kept 14 rounds @ 10 yds in a 6" circle. The pistol is more accurate than the shooter.
There is no gritty feeling in the trigger and I wish I had a gauge to measure the pull as it is IMO 200% better than it was.
I wouldn't think of removing any springs or performing any of the mods. I've read about in previous posts for safety reasons.

 

[btmlinedan]

I took apart my trigger and cleaned up / polished all the metal internals. This helped a smidge, but felt like the main part of the "grit" was coming from where the "S" piece was rubbing against the plastic S part.

After polishing, when the springs were pressed and the S piece moved in there was no grit. also, without the trigger rear assembly installed and holding the "arm" down, the trigger pull was smooth as glass so I knew it wasn't the spring riding in the column above the actual trigger.


(sorry its hard to pick up in pictures)




Once reassembled, I noticed this was the part that was causing the gritty trigger.



After further inspection, I noticed where the laser cut this "s" piece out there were still ridges (even though it felt smooth to my finger).



I cleaned this part up (with a friends help...my dremel kit had nothing this small). once re-installed i put a drop of oil in there, and re-assembled.

since i have a non-worked sw9ve and then my allied (the one im workin on) I could put both next to eachother and pull the trigger on both.

the allied (worked) is much smoother now...still not m&p smooth, but MUCH better than before. I'm sure this will continue to be a work in progess as I learn more knowledge.

 

[speedshooter]

Hey btmlinedan: Thats pretty much what i discovered on my 40ve. You could actually see the parts vibrate when moved. I polished everything i could...and lightened the springs inside the part in pic#1...works great. have about 400-500 rds through it without a hic-up.

 

[btmlinedan]

when you say lightened the springs, did you find replacements or cut coils off?

 

[bbaaspencer]

Hey, btmlinedan, great tip! I polished out the rough "S" area and it's about 75% smoother.

 

[btmlinedan]

great to hear! any one else have any tips post em on up!

 

[acrussell]

i just bought a 40ve about a week ago. love the grip the look and the light wait. but hate the trigger. i bought the gun knowing that i would need to do some work to the trigger. when i first got the gun back home the first thing i did was take it apart. i removed the werthless pigtail spring and replaced the outer spring with the first click style pen spring i got my hands on. after a hole ten min. or so of having the gun i took the trigger pull from 12.4 lbs to 6.1 lbs. didnt feel like the same gun after that. im not that skilled with the hole sanding and polishing the parts thing and seems to risky being how close of a tolerence the parts are made for. the last thing i would want to do is try to explain that one over the phone to s&w when i send it in so thay can fix the problem i caused.

 

[WildCard ZX6R]

acrussell, personally i would not use your pistol in its current configuration for any purpose other than range duty. A few years back 05-06 there was a member here sharpstick who was advocating such spring substitution and i decided to give it a shot. It seems my reports are long since gone in the few years absent i was on this forum (server migration ?), along with my defunct email i was unable to recover my original screen name.

BUT, long story short, i put about 6,000 rounds through my sigma with the pen spring "mod" and experianed a roughly 1% failure to fire on the first attempt. These were light strikes to the primer that fired "mostly" on the second attempt.

Just a FYI for you and all the other people considering modification of the sigma trigger.

Happy shooting...

 

[acrussell]

i agree with you on the reliability part. i do just use the gun for target and plinking i would have never done or recomend this on a carry pistol. but i have had about 600 rounds threw the past few days with know problems. with any ammo i put threw it. i didnt think this gun would be as good as it is for only paying 309.95. im considering geting another for carry. I didnt think i would ever retire the glock!! BUT i think i will leave that one stock.