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Gamo Compact Trigger Screw

Discussion in 'Air Pistols' started by Dglad, Oct 26, 2019.

  1. Dglad

    Dglad Member

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    Hi
    I am a newbie and I am not sure if this has been already covered but I would like to know if anyone knows the exact size of the trigger adjustment screw. I am aware that this screw does little or nothing to make a difference to the trigger sensitivity but I have seen where other shooters have changed this screw for a longer one and it has made a difference. I am thinking that if I knew the exact size of the factory fitted screw, I could change it for a domed ended hex grub screw thus eliminating the head of the factory screw which would allow for better adjustment. Any thoughts would be appreciated.
    Thank you.
    Dglad
     
  2. Ade C

    Ade C Engaging Member

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    Use an electrical socket or light switch faceplate screw. You'll probably need to cut it down a little but it fits and enables a very light trigger pull
     
    garryt and Radlad like this.
  3. Dglad

    Dglad Member

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    Hi Ade C Thank you for your reply and suggestion, I will check this out.
    Regards.
    Dglad
     
  4. Radlad

    Radlad Engaging Member

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    Face plate screws are an unusual size, but standard in the industry M3.5
     
  5. JoeH

    JoeH Engaging Member

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    I have one of these. I thought this screw just let you adjust the angle of the trigger (side-to-side), and had nothing to do with trigger "sensitivity"? Maybe I'll learn something new.
     
  6. td_boy

    td_boy Donator

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    With a Gamo Compact the biggest difference comes from smoothing the trigger sears.
    If you take the grips off and the internal cover - you'll see the sears and the fact they are made from laminated steel plates.
    This gives the faces the feel of a Badger's arse!
    Drop these out and smooth them off without changing the angles, drop in a tiny little dab of grease and reassemble.
    Then marvel at your new and vastly improved trigger. :thumb:
     
    Burner likes this.
  7. Dglad

    Dglad Member

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    Thank you all for your advise, I will now have a good idea of the trigger mods that can be done, I know this is a very low entry level pistol but I find it to be really accurate at 10m and I am enjoying using it. If I can improve the trigger, I will be even more happy with it. I have attached a few pictures of the trigger mechanism that JoeH may find interesting.
    Dglad
     

    Attached Files:

  8. PhatMan

    PhatMan Posting Addict

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    Hello to All,

    To edit one of Dglad's photos.

    Have fun & a good Sunday :)

    Best regards

    Russ

    [​IMG]
     
  9. DrGunn

    DrGunn Engaging Member

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    I brought one of these about 20 years ago as my first target air pistol. At the time it was one of the only budget recoilless air pistols with decent sights and anatomical grips I could find. I used it for years and learned a lot with it. Once the trigger sears have been polished and the adjustment screw replaced they are pretty good. It’s a shame Gamo couldn’t fit a longer screw in the first place...
     
  10. Dglad

    Dglad Member

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    Thank you PhatMan for the great edit it really needed this. I agree with DrGunn it does seem a shame but I did read somewhere that Gamo used the short screw so that there could be no problems with safety and competition rules. I have had a thought that maybe an M3 x 12mm long hex coned end grub screw would offer a solution so I will give it a try and report back later this coming week.
    Dglad
     

    Attached Files:

  11. Radlad

    Radlad Engaging Member

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    It won't
     
  12. Dglad

    Dglad Member

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    Hi Radlad thank you for the heads up, is this because of the thread size/pitch or perhaps another reason?
    Regards
    Dglad
     
  13. Dennis74

    Dennis74 Active Member

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    The best mod I did to this compact is to change this spring with a less powerful spring.

    It came from a cheap box pod springs you can get anywhere.

    In combination with adjusting the (original) screw mentioned above, you can turn it into a fantastic shooter with a very light trigger

    [​IMG][​IMG][​IMG]
     
    Burner likes this.
  14. Dennis74

    Dennis74 Active Member

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    One last thing:
    Add a unf- threaded adapter to the barrel. Your neighbour's won't even know what you're doing....
    But that's got nothing to do with a trigger adjustment screw too ;)[​IMG]
     
  15. Ade C

    Ade C Engaging Member

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    or just use a socket faceplate screw? it fits as I have one in mine
     
    PhatMan and Radlad like this.
  16. Radlad

    Radlad Engaging Member

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    You told him that already, but he doesn't seem to have listened. Yes it works, just done that on mine, thanks for the tip.
     
    Ade C likes this.
  17. cloverleaf

    cloverleaf Super Moderator Staff Member Mod/Admin

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    Why not just remove it and measure it?

    If it's M3 an Air Arms trigger adjustment screw might work as they use (IIRC) 10-12mm long M3 screws in the S400 and TX200; both of which come with rounded, polished ends already..
     
    PhatMan likes this.
  18. Dglad

    Dglad Member

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    Thank you all for your help and advise, I can now report back on my progress concerning the Gamo trigger screw mod. I did in fact take on board the suggestion made by Ade C and I did try it but although it probably could have been screwed into the screw hole it seemed a bit too tight so I decided to give this a miss. Fortunately, I found a gun shop that had some BSA M3.5 X 8mm trigger screws in stock and I have acquired some of these. They fit perfectly and allow for a really good fine adjustment to my trigger with the option of setting it back to factory setting if required. If anyone is interested, the website I found is at https://www.shootingandscuba.co.uk/store/ and they are very helpful with next day delivery. The spring mod is interesting and definitely worth a try but right now I am really happy with my trigger setup.
    Regards to all.
    David
     
    Radlad and PhatMan like this.
  19. Ade C

    Ade C Engaging Member

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    Glad you got this sorted
     
  20. Dglad

    Dglad Member

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    Thank you Ade C, it has been very helpful receiving advice from the forum members, there is a lot of knowledge out there. This info may be of interest.
    Dglad
    BSA Trigger Screw.jpg gamo-compact-trigger-adj-screw.jpg
     
    Ade C and Radlad like this.

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