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Gun fire company

  • 04-08-2008 9:07am
    #1
    RC car fanatic
    Registered Users, Registered Users 2 Posts: 982 ✭✭✭


    I was looking through Airsoft News EU and I saw an ad for GFC's new M4A1.I went on to the site and the gun seems very up to scratch.It even has a mosefet and it is only €204.12.The other products seem to be very reasonably priced.The delivery on a large amount of items is free including their own M4A1 and It costs about €70 for up to 45 kilograms.They are situated in Poland which means no customs charge.The M4 does shoot at 420 fps but I emailed them and asked will they downgrade it.I'm still waiting for a reply.

    Link:http://gun-fire.com/product-yor-1152191347-M4-A1-Carabine-GFC-Guns-GFG03-FULL-METAL.html

    Link:http://airsoft-news.eu/news.php-Scroll down until you see a big GFC sign.


Comments

  • #2
    kdouglas
    Registered Users, Registered Users 2 Posts: 6,414 ✭✭✭kdouglas


    It's a pity they decided to make an M4, as if there aren't enough of them out there already, something a bit more interesting, even a 416, would have been better. But fair play to them for being a little bit innovative, I dont know of any other company who is installing mosfets as standard yet.


  • #3
    Stokolan
    Registered Users, Registered Users 2 Posts: 1,809 ✭✭✭Stokolan


    I wonder if they offer a downgrade service as by the looks of it most of thier aegs are over 1 joule..


  • #4
    Shiva
    Closed Accounts Posts: 6,401 ✭✭✭Shiva


    kdouglas wrote: »
    I dont know of any other company who is installing mosfets as standard yet.

    JG have one in their AUG A3, I believe. Vtec can confirm that though - opening up guns makes my teeth itch, so I try to avoid it :)


  • #5
    Masada
    Banned (with Prison Access) Posts: 11,001 ✭✭✭✭Masada


    Shiva wrote: »
    JG have one in their AUG A3, I believe. Vtec can confirm that though - opening up guns makes my teeth itch, so I try to avoid it :)

    yup, thats right, :)
    2710614035_9c31eef49f.jpg


  • #6
    kdouglas
    Registered Users, Registered Users 2 Posts: 6,414 ✭✭✭kdouglas


    interesting that


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  • #7
    RC car fanatic
    Registered Users, Registered Users 2 Posts: 982 ✭✭✭RC car fanatic


    Ye..Thats pretty cool...Are mosefets designed for airsoft only or other things?


  • #8
    Masada
    Banned (with Prison Access) Posts: 11,001 ✭✭✭✭Masada


    there in lots of electronic things.


  • #9
    Tactical
    Registered Users, Registered Users 2 Posts: 1,542 ✭✭✭Tactical


    The MOSFET is used as a switch in this instance.

    What normally happens is the micro-switch that the trigger connects to, carries all the current for the motor. The motor is a reactive load and as a result of that and the large current drawn by the motor, the micro-switch contacts can become pitted and worn. This can lead to erratic operation and the micro-switch contacts can even stick.

    A MOSFET doesn't replace the switch but rather it carries the high current drawn by the motor. Now all the micro-switch attached to the trigger has to carry is the bias necessary to turn on the MOSFET.

    So, no more pitted and burned micro-switch contacts.

    Outside of size constraints, its not a big deal to upgrade any AEG with a MOSFET.

    (Fot the more techie minded, a gate bias is applied via the micro-switch attached to the trigger, biasing the MOSFET to have a very low source-drain resistance.)


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