need to lower fps with out changing spring

Discussion in 'Gun Building, Modifications & Repairs' started by deadeye, Nov 15, 2012.

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  1. deadeye

    deadeye New Member

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    in between chicago and milwakee
    hey i just ordered a g&p m4, and a hear that out of the box they shoot a little hot, like around 420 fps. my field limit is 400 fps, but i dont want to change the spring in my gun, and i want to enjoy the gun stock for a while before i do any major internal upgrades. right now all i wont to know is if any of you have a few tricks of the trade to break in the spring, or something that will make the gun drop about 20 fps
     
  2. Finalencounter

    Finalencounter Duke of Penguins Supporting Member

    5,239
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    Warrenton
    You could always go the sleazy route and use heavier BBs. Lol
    Well, I recommend firing it a bit, after a while it should fall down a bit, you could leave the spring compressed, but that will take quite a bit of time.
     

  3. dylan484

    dylan484 New Member

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    Tifton
    I wouldn't do it, but you could file down your air nozzle so it doesn't make perfect seal.
     
  4. Ehudakineyah

    Ehudakineyah New Member

    2,510
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    Mililani
    There is a thread for this right down the list. Sorry
     
  5. theonlyBuster

    theonlyBuster Active Member Lifetime Supporter

    14,149
    5
    S. Florida
    Heavier BBs are the cheater's way.
    Compressing the spring for a few days MIGHT work. You can also fire a few bags of BBs through it to break it in.

    Also keep in mind that most fields have a buffer area. As in the limit is 400, but 410 is allowable because most guns shoot a little hotter until they're broken in.

    I'd compress the spring first, then see where that leave you.


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