Be careful doing trigger mods

[opiejp]

i do have to admit i read and believe way too much on the internet.i did my research on doing trigger mods on the sigmas.some take out the large spring in the sear and leave only the small spring in it's place.i have even read of somebody replacing both springs with one out of a ball point pen! well i had taken out the largespring and left only the small spring in.oh! it made one heck of a difference in the trigger weight! well all seemed fine,i ran around 160rnds through the sw40g i have and everything worked as it should,the pistol shot great both normal and rapid firing.well,the other day i picked the sigma up and about every 3rd attempt to rack the slide,the trigger would not reset to the fire position!so,luckily for me,i never throw any gun parts out.i put the large spring back in and presto,back to normal again.i would have really hated to see this happen if my wife was needing this pistol to protect herself or our son!
so,from now on,i am going to quit monkeying around with my sigma,and the new one i am expecting this weekend,i will simply do a polish job on all of the metal internals and accept the gun for what it is,a fine weapon for the money! i can always use my glock g35 if i really feel like "target" shooting.
anyway,i was just posting this for anybody that is thinking of removing any of their springs.it may work o.k. for some.i thought it had worked for me!!!

 

[ChrisKalan]

A smart, well thought out and logical argument. Plus it won't void your warranty.

 

[.357 mag]

Sounds like a good plan to me

 

[mlk18]

Good advice if you are having issues after a mod (which should be THOROUGHLY tested before using for SD). I have had the exact opposite experience with a few thousand rounds and a several hundred dry fires through a similarly modded Sigma, but to each his own.

 

[Unit505]

I agree, but I did replace my Large Outer Spring with another, slightly lighter weight spring, but not from a ball point pen. I had an old industrial spring assortment and got lucky with the diameter and length. Heavier than a ball point, but lighter than stock. Very happy with the end result. Good point on keeping the original parts. Both my pigtail and the original outer are taped in the factory case.

 

[opiejp]

I agree, but I did replace my Large Outer Spring with another, slightly lighter weight spring, but not from a ball point pen. I had an old industrial spring assortment and got lucky with the diameter and length. Heavier than a ball point, but lighter than stock. Very happy with the end result. Good point on keeping the original parts. Both my pigtail and the original outer are taped in the factory case.

that i would see working with no problem.it just seems that the light spring doesn't have enough juice to do the job.in my case anyway.

 

[40cal]

I think the large outer spring helps keep the inner spring from binding up & holds it in position. IMO just remove the pigtail spring and polish the sear, I have 1800 rounds with no FTF/FTE with my 40VE.
FYI the pigtail spring is shown with green mark in pic.

 

[Group 4]

Though the Sigma appears to be a simple design - like most semi-autos, I'm not comfortable monkeying around with something that's designed to protect me.

 

[Masonic]

I saw in a magazine about a guy made his trigger lighter buy doing a mod and the weapon discharged because the trigger was light, killed his friend from dropping the gun he was convicted of manslaughter the court stated he altered a safety feature on the gun. The gun wasn't a sigma but courts love to twist things around and if you use you gun in self defense they may bring up your mod to make a case.

 

[Bompa]

It's too bad that Apex Tactical doesn't make some trigger parts for the Sigma like they do for the M&P..Their M&P stuff is great and user friendly to insert with videos showing how..
There must be a huge amount of Sigma's out there,Should be enough people that would love a great safe trigger on their Sigma..

 

[AntiHero]

I did a full metal-to-metal contact polish of the sear and sear housing, striker contact point, mated the sear and striker contact points (factory only 1/2 the sear was contacting the striker), removed the pig tail spring, replaced the striker spring with a Wolff and polished the feed ramp and added Trijcon night sights.

It's now a pretty sweet gun IMO, but every once in a while the sear fails to reset. The problem is few and far between, but it happens enough to never use this gun for self defense.

 

[40cal]

Sigma SD/HD or Range Queen?

I did a full metal-to-metal contact polish of the sear and sear housing, striker contact point, mated the sear and striker contact points, removed the pig tail spring, replaced the striker spring with a Wolff and polished the feed ramp and added Trijcon night sights.

It's now a pretty sweet gun IMO, but every once in a while the sear fails to reset. The problem is few and far between, but it happens enough to never use this gun for self defense.

Exactly, this is why a sigma owner has got to ask themself, Do I want a plinker or a self defense SHTF gun.
Even Smith & Wesson marketing department had to wise up, the new SD40/SD9 SELF DEFENSE PISTOL. The name says it all, what you buy is what you get. Apparently many thousands of Sigma buyers thought they were getting a $300 Range Queen with a match trigger that hits POA @ 50 yrds. I cant speak for anyone else but for SD/HD I do not want a hair trigger on a pistol with no external saftey that I tuck into my waistband with the johnson, that may FTF one out of a million shots in a SHTF situation.

 

[Thunderhawk88]

Though the Sigma appears to be a simple design - like most semi-autos, I'm not comfortable monkeying around with something that's designed to protect me.

Very smart thinking. Plus, our Sheriff warns us about modding our CCW guns as that WILL be used against you in court, especially in civil court, should you be forced to use it.

 

[USAF385]

Also, be careful when modifying your keyboard.. you may end up breaking the "shift" key.

 

[RON1955]

Can someone tell me what the pigtail spring is for. I removed mine and polished the other parts. Do I need to reinstall the pigtail spring?

 

[Jbradley]

Are replacements for the outer and inner springs available anywhere? I would like to try lightening one or both of mine by incrementally clipping coils but I don't want to do anything that I can't undo to the original pieces. It looks to me that the inner and outer springs help to support each other so I wouldn't be inclined to remove either one. I tried removing the pigtail spring but didn't like the mushy feel of the initial take-up without it.

 

[DWinter]

I saw in a magazine about a guy made his trigger lighter buy doing a mod and the weapon discharged because the trigger was light, killed his friend from dropping the gun he was convicted of manslaughter the court stated he altered a safety feature on the gun. The gun wasn't a sigma but courts love to twist things around and if you use you gun in self defense they may bring up your mod to make a case.

Mods shmods, I hate to remind people but if you always keep the muzzle pointed in a safe direction and have positive control of your weapon at all times like you should, no one gets hit unless you meant too.

 

[RON1955]

I went back to some older post, something I should have done to start with, and found the answer to my question.

 

[blastfact]

My Sigma has a mod'ed trigger. It's is good as it's going to get. Always fires and resets. It has passed my 5' and 10' drop test on to carpeted floor and hard Okie dirt. Sorry won't drop them on hardwoods or concrete.

Mines all good and trust my life to it. Then I bought a M&P .45 FS a few weeks ago. What a game changer that thing is. And yes,,,, I did the trigger on it. What a butter cup.

 

[Ibyte 40]

Hello all, first post here, but long time reader here on this site and finally decided to get time to joining. I think this topic thanks to the Op is very, very, very important anytime you mod or enhance your weapon of choice. I have a Sigma 40(thousand and more rounds already) and have just like many of you shot other weapons and either own different others, the Sigma 9 and 40 VE really are weapons that should be left as is? great value, reliability, firepower, and heavy trigger pull. I have ate and eaten many guns in my lifetime both rifles and handguns the Sigma 9 and 40 VE are awesome guns left stock. Its true the trigger lightens up after a few hundred rounds, not much but buy this time i am sure you already like your 9 or 40 VE and the trigger is not an issue. Hope i put my IMO correctly about the trigger mod on this weapon, its all about safety and the Sigma already really dosnt have any. and again hello to you all and hey Leejack!! thank you brother for the invite you where correct about the quality of the members that post here!!