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2340 performance advice?

Discussion in 'Air Pistols' started by pauly5s, Feb 10, 2014.

  1. pauly5s

    pauly5s Active Member

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    Hello good people. Thanks for your help so far. Now, I'm starting from scratch as a novice and I'd like do know how important the polishing etc of the internal parts is compared to adding a longer barrel and using better pellets as regards maximizing the power?
     
  2. pauly5s

    pauly5s Active Member

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    really just wondering where to start with it. I don't even have any tools yet
     
  3. Meteor62

    Meteor62 Major Poster

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    Do you mean a 2240?
     
  4. pauly5s

    pauly5s Active Member

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    I did. I am after a folding stock aswell
     
  5. Meteor62

    Meteor62 Major Poster

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    Plenty of threads on here re modding the 2240. Polishing the trigger sears will result in a smoother trigger pull. Go easy on a longer barrel it can easily take it over the limit.
     
  6. Squats

    Squats Engaging Member

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    Remember they`re American, and don`t use metric sizing. I got a useful set of alan keys from B+Q. Can`t remember the size you need to remove the breech, 50 thou I think. They are fairly easy to work on, but read some guides or Youtube it first. Gmac will provide everything you need, but do add up how much you`ll spend- working on these is a really good way of emptying your bank account. If you do get stuck, someone on here will know the answer!
    As for the stock, you can get an adaptor to fit a collapsable stock (AR-15 type). There may be a folding version. Again, somene here will know. They`re pretty near the legal limit, so be careful on the power mods.
    Good luck.
     
  7. pauly5s

    pauly5s Active Member

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    please help meteor , or anybody. I'm trying to put on this Gmac long breech. the little piece that goes in the transfer port between the cartridge and the barrel fell out when I opened it up and I can't tell which way up it goes into place ( long bit up or down?) my fault for.not being careful I know.
     
  8. Meteor62

    Meteor62 Major Poster

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    Search my threads I had the same problem but was put straight on here
     
  9. andyz1000

    andyz1000 Banned

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    The piece you refer to is the transfer port
    The shorter end sits on the air tube seal and the longer end goes into the breech/barrel
    Check all seals are in place before you tighten the breech screw down
    Hope that helps
     
  10. bl4de

    bl4de Donator

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    Also the only thing you may want to polish is the hammer itself no need to polish inside the Tube.
     
  11. pauly5s

    pauly5s Active Member

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    thanks got it. there is no rubber seal for the top half and none under the breech grub screw. also this extended hollow probe won't push the pellets in nicely. I have to force it repeatedly. not right is it?
     
  12. bl4de

    bl4de Donator

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    No definitely not ! if you're having to force it in there's a possibility of Pellet damage which isn't going to aid in accuracy ! does it work ok with the standard Probe ?

    you can always do this mod if you're steady with a drill !

    [​IMG]
     
    Last edited: Mar 6, 2014
  13. pauly5s

    pauly5s Active Member

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    I can't put the standard probe into the New breech. I phoned Gmac, they said they would send me a normal extended probe in exchange. the problem started with the first pellet I tried.
     
  14. bl4de

    bl4de Donator

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    Fingers crossed then, that sorts the problem out ! Good luck with that Paul.
     
  15. pauly5s

    pauly5s Active Member

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    thanks for your help bro
     
  16. pauly5s

    pauly5s Active Member

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    if you're still there mate. is there supposed to be a seal between the top of the transfer port and the breech?
     
  17. ped

    ped Keyboard Hero

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    not as std but you can use one from the jet on a lighter
    ped
     
  18. pauly5s

    pauly5s Active Member

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    I'm thinking the probe is hitting the transfer port. the end is all knocked up
     
  19. bl4de

    bl4de Donator

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    Only way to tell that for sure is with the Barrel off the gun and check the probe pushed in by hand ! if that's the case, get some fine wet and Dry sanding paper and remove some of the offending material ! Although the T/P doesn't protrude into the Barrel.
     
    Last edited: Mar 6, 2014
  20. pauly5s

    pauly5s Active Member

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    oh thanks mate. Gmac said they will swap it for a normal ext probe but I don't want to find the same problem with that aswell.
     

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