Quick JG question

Discussion in 'Electric Guns' started by ahood76, Oct 22, 2012.

  1. ahood76

    ahood76 New Member

    On the JG enhanced m4's how necessary is it to re-shim the gears? Will the gun still have some decent longevity without it? And will a re-shim affect its performance at all?
  2. theonlyBuster

    theonlyBuster Active Member Lifetime Supporter

    S. Florida
    Shimming isn't necessary, just recommended for increased longevity.
    Keep in mind these guns are made in factories, so some are shimmed relatively well, while others or horribly shimmed, so it tends to be a case by case thing. JG is pretty average with their shimming. Not bad, but not great either. If you're not planning on upgrading, it's not a huge concern. But 2-3 years down the line when your spring settles and you're ready to give it a tune up, when you pop it open, you'll definitely want to shim it then.

    In terms of performance, there's a direct correlation between shimming and reliability, rate of fire, gun loudness, longer battery life/use, and a couple other things. In other words the better your gun is shimmed the better it will perform in any build.

    In simple terms: Think of shimming like getting an oil change in your car. They say get one once every 3,000 miles or so. Some of us (or our wives) have been driving our cars for the better part of 10,000 or even 20,000 miles without even considering an oil change, yet the car still runs fine. But we know, fresh oil keeps the car in better tune. It's that same thinking.
    Last edited: Oct 22, 2012

  3. ahood76

    ahood76 New Member

    Wow well thank you very much! I appreciate it!