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Ammo for GSG firefly?

Discussion in 'Rimfire' started by Ejmorrison, Oct 4, 2018.

  1. Ejmorrison

    Ejmorrison New Member

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    Hi everyone. I recently acquired a GSG Firefly (same as Sig mosquito) and I have found that it will jam on the next to last shot. Unless I use cci or Remington thunderbolt ammo. Anybody else notice this problem? Other than that, I absolutely love the gun.
     


  2. cporfe

    cporfe Member

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    Austin
    I have one too. Although I've only shot it once, I used CCI and Aquila high speeds and didn't have any problems after the first 50 rounds. Sort of a break in period. Altogether I put 300 rounds through it at the NRA Range in Fairfax, VA, where I lived before I moved here to Austin this past summer. I also bought some new, old stock SIG Mosquito magazines and they worked fine. Don't know exactly why yours would jam at the end of the magazine.

    Not much help but at least we both have nice shooting guns.

    Chris
     
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  3. Ejmorrison

    Ejmorrison New Member

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    Pickton
    I did some further research since posting and found that you can mitigate a lot of the failure to eject/failure to fully load by grinding down and polishing the feed ramp. It's a 2 piece design and at least on mine it was not very refined. I ground it and polished it up and now I can shoot most brands through it. I shot about 100 rounds of Remington golden bullet value pack through it and it didn't jam once. Whereas before it would almost always jam with those.
     
  4. pronstar

    pronstar TGT Addict TGT Supporter

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    I really like the mosquito, but have read about too many problems with them...including close friends who know guns really well.

    Curious to hear how these work out for you guys when you put some rounds thru them.


    Sent from my iPhone using Tapatalk Pro
     
  5. Ejmorrison

    Ejmorrison New Member

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    Pickton
    Here are a few pictures
     

    Attached Files:

  6. Sam7sf

    Sam7sf TGT Addict

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    The trick to fixing it is trade it in for a ruger sr22.
    5D721E53-A701-4905-8ED5-78029B4674A0.gif
     
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  7. majormadmax

    majormadmax TGT Addict

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    I have a SIG Skeeter that was problematic, but at the range a fellow shooter recommended I run it really wet (oiled) especially concentrating on the small hole in the side of the slide. Since I didn't have anything to lose, I oiled that sucker up and found it runs a lot more reliably. Might want to give that a try if you ever get one...
     
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  8. tonelar

    tonelar Member

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    mine had never given me a problem. first 500 rounds were minimags. it now runs reliably with those or the remi golden bullets.

    yes, it definitely likes being oiled up.
     
  9. Big Green

    Big Green Well-Known

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    I’m intrigued. Are those before or after pics and where exactly is the polishing done?
     
  10. Dawico

    Dawico TGT Addict

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    It appears to be after polishing and firing (it is dirty). The feed ramp under the chamber is polished.
     


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