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Thread: Sigma Trigger

  1. #26
    dondavis3's Avatar
    dondavis3 is online now Senior Member
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    S&W made mine much better.

    I didn't ask for a trigger job, I told them that my trigger was gummy and gritty.



    They fixed it and paid shipping both ways.

    S&W = great customer service.

    I like the gun now and it shoots great.


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  3. #27
    Viper is offline Junior Member
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    Sigma Trigger

    Quote Originally Posted by dondavis3 View Post
    S&W made mine much better.

    I didn't ask for a trigger job, I told them that my trigger was gummy and gritty.



    They fixed it and paid shipping both ways.

    S&W = great customer service.

    I like the gun now and it shoots great.

    I got the same deal last fall shortly after I bought my Sigma. Frank did a great job, but I understand they no longer will do it. Now, when I pack my bag to go to the range just to shoot, The Sigma is just as likely to be in it as one of my SIGs.

  4. #28
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    Angry

    It is sad that Frank can't do it anymore.

  5. #29
    SP3's Avatar
    SP3
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    When I bought mine, I decided to leave the pistol alone until I had put a decent # of rounds through it. I wanted to have a good baseline feel for any mods I ended up doing. I have not put as many down as I would liked but spare time to get out is hard to come by. I only have 250 rds through. No problems so far. Solid performance, I am still the limiting factor as far as accuracy (4" groups at 25' standing). But, I decided to work on the trigger a bit today.

    I wish I had measured the trigger pull when it was new to see if it freed up any during the first 250rds. I did not, but I measured it today pre-fettling and got between 12.5 and 13 lbs averaged over 10 tests. I then spent less than an hour total including searching for a different outer spring, cutting it to length, buffing any ridges or sharp edges, cleaning, reassembling, lubing and retesting.

    With very minimal work, I have already taken the trigger pull down to consistent 11.5 lbs. Though the trigger feel is already much imprived, I can still feel ridges when pulling so there is some reduction in pull to be had and smoothness to be gained without much time or effort. I also left the pigtail spring in this time around. I am not sure I want to remove it altogether as some have done. I also don't think I want to remove the outer spring altogether either. Time and a fair number of rds will tell but I think what I have done should make a nice difference.

  6. #30
    SP3's Avatar
    SP3
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    OK, so I lied a bit. I did some more polishing tonight. I found my Cratex bits from my racing days and truly polished the appropriate surfaces. With the pigtail spring still in I am now down to 11 lbs even. I removed the spring and that takes it down to 10.25 lbs.

    After looking things over, reinstalling the spring, looking, removing, looking again, I do not think it is needed like I said last post. There is still a load on the ramped section whether it is in or not. The load is higher with it in of course but out, it is still there. I have left it out for now.

    The concave section needed the most polishing and it is still not perfectly smooth. Where that rides in the assembly housing there was a very very fine mold line that I think may be overlooked in all of this. It was right at the apex of the ramp and would act to concentrate all of the load at that point instead of spreading it over a larger area. I took a fine jewelers file and very carefully smoothed it down. This would have worn in eventually. I just sped things up. Look at yours in the right light and you'll see it.

    Cleaned everything up, reassemble, lubed, and took the numbers you read above. A noticeable improvement in feel again. Maybe another 45 minutes work. Two hours total at most and I have dropped the pull well over 2 lbs and the smoothness is like a completely different gun. NOW, time for more rounds. Promise!

  7. #31
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    I once had one of the earlier Sigma 380s and after 500 rounds it had not loosened up any, plus my right hand was twice the size and strength of my left hand. Traded for a Taurus 38 after that. Much happier!

  8. #32
    SigmaBoy is offline Junior Member
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    All I did was removing the torsion spring (pigtail) and the trigger was a lot better. Still hard enough for safety but smoother. Leave the firing pin and the sear springs alone and the gun will work.

  9. #33
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    Quote Originally Posted by SigmaBoy View Post
    All I did was removing the torsion spring (pigtail) and the trigger was a lot better. Still hard enough for safety but smoother. Leave the firing pin and the sear springs alone and the gun will work.
    But what about my freakishly large right arm!

  10. #34
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    Quote Originally Posted by Baldy View Post
    There are no reputable smiths that I know of that will do trigger work on them. There was a thread over on the S&W site where a couple of guys had them down to about 31/2lbs pull.
    That was me!

  11. #35
    antbatt13 is offline Junior Member
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    Quote Originally Posted by Vector16 View Post
    That was me!
    Are you still doing them, and if so, how much? I'm ready to pull the trigger on a Sigma 9, but want to know in advance what it's going to cost me to cut the trigger pull in half (at least).

    Bummer Frank can't do these for free anymore :/

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