Sigma Brush and Polish Job

Discussion in 'Other Handguns' started by MrApathy, Feb 22, 2007.

  1. MrApathy

    MrApathy Active Member

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    end result of this is a smoother trigger.
    but as parts vary your results may vary.

    this is fairly simple though the pics makes it look easier than it is.
    the trigger pin is not fun to take out and put everything back together neither is the sear,sear lever and housing.

    caution springs can fly and pins can fall and roll where you cannot find them.

    this shouldnt have much effect on guns that suffer from a very crunchy trigger or sproingy trigger ie lots of spring no crisp. it will only be nice once the gun has 500-1000-2000 rounds
    more you use the gun better the springs will let up.

    if you have a very crunchy or gritty trigger either send the gun into S&W or find a smith that can stone the sear and striker clean.
    horizontal ridges on sear face and striker face will make the trigger gritty or crunchy.

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    caution do following in well ventilated area
    be carefull of open flame. teflon dry lube is flamable
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    carefull the teflon cools and drys before heating
    it can catch fire keep at eye on it blow it out immediately
    polish the teflon covered part let cool and apply more
    dry lube. reassemble if trigger is too sluggish remove excess
    teflon.
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    wolff gunsprings aka gunsprings.com is offering a lighter striker safety spring which may also make the trigger nicer.

    this mod is best done on a sigma that has been broken in while the part

    removing extra springs from the sear and sear lever can lower the trigger weight but may decrease reliability with all. such mods should be reserved for target and competition. I found removing springs decreased crispness of the break which is not that great to begin with.
     
  2. West01

    West01 New Member

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    This is an excellent and informative post Mr.A.

    Thanks

    I did consider acquiring a Sigma recently as "fun gun" (aka affordable). However the trigger pull did humble me and made me rethink the transaction.

    I'm still in the market thought. I would prefer to buy a S9-A1
    but before they get in my neck of wood, the socialist republic of California, it will be time for me to shop for cemetery lot.

    Any advice on improving the Sigma chamber ramp? It just look like a square block to me.

    Cheers!

    West01
    :D
     

  3. MrApathy

    MrApathy Active Member

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    feedramp?
    havent had any issues on my 40ve with feeding.
    though some people have had FTF issues
    the magazine spring and follower need to be in good condition
    follower is small.
    magazine spring is little weird.
    steyr mags are much nicer in comparison except for the stainless material for the mag body.
    Sigma is lighter than the steyr and doesnt handle recoil as nicely
    think the recoil is cause for some issues people have
    most seem to move to 9ve and the problems go away.

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    Sigma is a good gun though S&W uses a cheap process on a critical part they should use a better process and increase the price a little $10-$20. hell they sell for $280-$320 maybe as high as $350.

    sigma will expose your weakness in trigger and control department.
    any gun with long heavy pull will suffice for that learn to use it will be a better shot especially when you go back to lighter trigger.

    new sigma trigger sucks no doubt but after breakin of the springs then cleanup the parts the trigger is night and day different much smoother lighter. will still require more skill but is much more tolerable than when new.

    steyr at $350 is a steal of deal with better quality parts.