Marlin 39 Trigger Improvement?

Discussion in 'Gunsmithing and Repairs' started by MP-44, May 18, 2019.

  1. MP-44

    MP-44 Member

    Dec 25, 2002
    I have a 39AS and the trigger pull is a bit heavy. Is there any drop-in replacement parts that would lighten it without risking lite primer strikes? Should I just take it to a gunsmith?
  2. Kp321

    Kp321 Member

    Jul 12, 2012
    West Texas
    The trigger on the 39 is a simple sear that engages a step on the hammer. Very old school since the rifle was designed in the late 1800's. That also means you need an old school gunsmith to work on it. The pull can be helped with some honing of the sear surfaces but it can also be made unsafe with too much honing.
    ColtPythonElite likes this.
  3. gunsmither

    gunsmither Member

    Dec 24, 2002
    Washington State
    Put some light grease, or preferably moly -grease, on the sear and hammer notch. Then put light thumb pressure on the hammer while pulling the trigger. Do this 40 or 50 times, and it will make the trigger feel much smoother, and usually eliminate most of the creep. Do this with the gun broke down, and use your other hand to stop the hammer drop. Use a glove on both hands to avoid fatigue. You can also do it with the gun assembled, but use a thick piece of rubber inner tube to cushion the blow against the firing pin/bolt. Best to remove the firing pin too. Or just catch the hammer with your other gloved fingers / hand. This smooths out the mating surfaces of the sear and hammer.

    Hope this makes sense? I've used this trick on many guns with exposed hammers with good results. Never do it on a S&W or Colt double action revolver, or you'll bust the full cock notch.
  4. gonetocamp

    gonetocamp Member

    Jul 28, 2008
    Approximately, 43 years ago I had a gunsmith lighten the trigger pull on my 39A Golden. He got the pull down to about 8 lbs. I then installed a reduced power hammer spring. That got the pull down to about 7 lbs. Finally, I broke it down and stoned the sear and hammer. Pull weight is down to about 4 lbs. now and I mess with it no more; but I shoot it a lot more.
  5. rem700nut

    rem700nut Member

    Mar 28, 2005
    yes there is a drop in part ,i bought i think from Wolff springs a new hammer spring for it .It dropped the trigger pull from 5.5 pounds down to 3 pounds, easy to change
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice