Replacement trigger springs | SIG Sauer 556 Forum

Replacement trigger springs

Discussion in '556 Discussions' started by turner56, Jun 22, 2020.

  1. turner56

    turner56 Member

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    Does anyone have a source for lighter trigger springs? I know Shooting Sight makes a new hammer but that won't help with the pull weight. I've already polished and lubed my stock unit so the pull itself is smooth, maybe a little long. In reality the heavy weight of the trigger pull is the only thing keeping my SIG556 gun from being as accurate as my AR. If I don't concentrate hard enough I pull shots to the right because of it. I've tried searching online but have come up empty handed. I know there was a guy from Germany doing it years ago but that source seemed to have dried up. Any help would be apreciated!
     
  2. LKY13

    LKY13 Member

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    Have you tried to adjust the plunger? Mine are very light, and crisp.
    Hard to say if this will work for every trigger, as I have not attempted to tune many US versions.
    And, US parts seem to vary quite a bit depending on the run.
    Well worth attempting first, though...

     
  3. turner56

    turner56 Member

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    I adjusted it to the break point years ago and I've through about setting it back further so that might be my next attempt. Before I polished my trigger I bought a backup set in case I took off too much; I guess there is a possibility that trigger sets engagement might be lighter but I doubt it. At the end of the day, I think it's simply the spring itself. It's really too bad no one makes a drop in trigger system or a spring that works with our platform, swapping out my GI trigger on my ar15 to a 4.5lbs drop-in completely changed the rifle.
     
  4. fachries

    fachries Member

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    +1
    [​IMG]
     
  5. LKY13

    LKY13 Member

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    If US-- you might be right. Hard to say. I was fortunate enough to track down some early rifles with Swiss trigger groups.
    The one I tuned to be the lightest has three distinct stages, and a very crisp final break w/minimal stacking.

    Have you tested Shooting Sight's trigger? Or, are you simply assuming it will not break lighter than your factory trigger?
    Just curious, as I have no experience with this trigger group, and have never been able to get any straight answers about it.
     
  6. turner56

    turner56 Member

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    I haven't, I may buy one eventually, although, I really think the problem is with the spring tension itself.
     

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