Sigma trigger job

Takl23

Takl23

Joined
Dec 4, 2011
Messages
118
Likes
31
Feedback: 1 / 0 / 0
I got a s&w sigma. What can I say the price was right. In any case I've seen and read how easy it is to lighten the trigger ny problem comes starts where I can't remove the pin after taking off the slide. I can get it a couple mm's out if either side. This is brand new sigma never fired till today. I've tried tapping with the punch and a hammer but don't want to break anything. Any help is appreciated.

*flame suit on for buying a sigma*:)
 
The Sigma trigger job is selling it and paying the difference and buying a used, but already repaired, M&P.

You'll thank me later.

-Mike
 
Takl23 said:
I got a s&w sigma. What can I say the price was right. In any case I've seen and read how easy it is to lighten the trigger ny problem comes starts where I can't remove the pin after taking off the slide. I can get it a couple mm's out if either side. This is brand new sigma never fired till today. I've tried tapping with the punch and a hammer but don't want to break anything. Any help is appreciated.

*flame suit on for buying a sigma*:)
Click to expand...
No flame forthcoming from me, but a polite suggestion that you sell the thing and do as drgrant suggested. No point spending time or money on a POS. The pistol simply is not going to hold up to long term use. I tried one at the Smith and Wesson Shooting Sports Center. It was fairly accurate, but falling apart (loose pins in trigger, slide stop lever broke off during use, etc.). Sell the gun at a small profit and put the money towards something that will actually hold up to use.
 
The Sigma gets a bad rap. It's a reliable low cost gun. (ve models). It is what it is. It has a heavy trigger. Shoot it the way it is or sell it. It's not hard to shoot once you adapt to the trigger.

The fact you can't remove that pin is a sure sign you should not be doing any modifications.
 
Last edited:
This thread is full of useless comments. I have 12k+ rounds through my Sigma over the last 6 years (the very expendable, junky, wholly unreliable, suck-ass gun as you all and other internet know-it-alls claim). It runs just fine (on the original springs) and nothing has fallen off of it. I have plenty of other pistols, but at the end of the day it's a $250 gun that does anything my $700 Glock does.

At any rate, the pins can be tight, just get the right sized punch and knock 'em out. I got a set of punches from Brownells in brass which work well. Smoothing out the sear and polishing up the surface will improve the trigger by miles and it is still half the price of an M&P.
 
It's not a bad gun for the price, the 1st batch of them were a bunch of lemons though. I have some pre-ban .40 high caps for a Sigma for sale if you're interested.
 
There is a sigma forum that does a DIY trigger job explanation with the trigger spring(s) being swapped out... I know two people that own sigmas and they have been reliable. I had one and sold it because I never shot it.

The only sigma I would stay away from is the small 380. [laugh]
 
OB1Kenobi said:
The only sigma I would stay away from is the small 380. [laugh]
Click to expand...

Hahaha those things are garbage, the finish is painted on metal that looks the same as what you see on a Jennings or Lorcin. Plus the mags are held in by plastic tabs, forget that.
 
I did this mod and took a polishing stone to all of the contact points of the FCG. I also took the firing pin out and polished off the contact points. These two things will lighten it by half, and smooth it out considerably. I have not found anything to do that would shorten the length of pull. I have 4k rounds since the mod and had 8k before it. I did have some Failure to Feeds before but have ben running flawless since. I did also have a broken follower in a mag.

I know that there were some shitty Sigmas out there (early models) but these mods make it as good as or better than an M&P/Glock (for $300 less) and I don't feel bad about dinging it up. Additionally, there are Pre-ban 17rd Sigma magazines out there for $35-$50.
 
60 buckscash said:
I did this mod and took a polishing stone to all of the contact points of the FCG. I also took the firing pin out and polished off the contact points. These two things will lighten it by half, and smooth it out considerably. I have not found anything to do that would shorten the length of pull. I have 4k rounds since the mod and had 8k before it. I did have some Failure to Feeds before but have ben running flawless since. I did also have a broken follower in a mag.

I know that there were some shitty Sigmas out there (early models) but these mods make it as good as or better than an M&P/Glock (for $300 less) and I don't feel bad about dinging it up. Additionally, there are Pre-ban 17rd Sigma magazines out there for $35-$50.
Click to expand...

I bought a sigma several years ago and did not shoot it a whole lot. Hated the trigger. I eventually sold it and got a Sig. The wife won one two years ago. We both hated the trigger and we barely shoot it...however..I will never again sell a gun. Just saw the video linked here and must say it was damn easy and the trigger weight is about half of what it was. Holy crap
 
I have a SW9VE and it is actually one of my most accurate guns. The gun comes with a torsion spring and two other springs (one inside the other) for a total of three trigger springs.

I removed the torsion spring and the inner spring (so I left only one spring) and the pull dropped to ~5.5#'s. unfortunately i had trigger reset issues due to the design. I ended up putting in the 2nd spring (still left out the torsion spring) and all moving parts are extensively polished. Trigger pull is long... but smooth. I enjoy it as a range bitch, and the mods cost $0.

When you are driving out the pins you have the gun up on some blocks right 9so the pins arent contacting the table/bench)?
 
I just did the Sigma spring kit from Apex ($20) and think it was worth every penny. Trigger is still firm but gone is the vagueness and horrendous stacking.

My $0.02
 

Similar threads

Apex curved triggers
Replies
0
Views
179
Laura
Laura
Glock Triggers
Replies
15
Views
676
chris_1001
chris_1001
Shield Plus trigger work
Replies
11
Views
878
Taipan01
Taipan01
Not/ Looking for S&W K frame trigger rebound/spring tool
Replies
5
Views
582
Retired-LEO
Retired-LEO
Precision Match AR Triggers: Geissele vs. Trigger Tech and Curved vs. Flat?
Replies
20
Views
3K
Spartan65
Spartan65
Back
Top Bottom