Semi not working

Discussion in 'Gun Building, Modifications & Repairs' started by 703, Sep 2, 2012.

  1. 703

    703 Active Member

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    webster
    So I was shooting my gun today and noticed semi auto isn't functioning correctly. It will sometimes shoot 1 BB but other times it will shoot in bursts or full auto while on semi.

    Any suggestions on how to fix it. It's an ICS M4 if it helps.
     
  2. bludyknux

    bludyknux New Member

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    Are you fully dedicating the motion of pulling the trigger? Or kind of "pop" tapping it?
     

  3. 703

    703 Active Member

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    webster
    Little of both I suppose. Sometimes it will shoot full auto or bursts either way I pull the trigger so I doubt this would be the cuase.
     
  4. SharpShot99

    SharpShot99 USMC CBRN Armed Driver Lifetime Supporter

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    Stamford
    Sounds like the Selector Plate is going to me, I'd have that replaced.
     
  5. Mystery43_4

    Mystery43_4 New Member

    1,307
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    Santa Barbara
    Sounds more like a worn cut off lever/sector cam, or a weak cut off spring.
     
  6. Lefse

    Lefse Well-Known Member Supporting Member

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    This can happen if the trigger contacts are burnt. If the trigger contacts are burnt the trigger trolley may stick and this can cause burst firing or full auto on semi. This issue have several possible causes though, the on I described is just one possible cause, you'll have to open the GB to be sure.