Tips on removing JG G3 G1 Flash hider for Sound amplifying attachment?

Dan doesn't know what he's talking about, for the most part.

The flash suppressor is glued on, but will unscrew with enough force (pliers and, if needed, vice), or is weakened (solvent, or dip it in boiling water for several minutes).

The flash hide should unscrew unless you have a 14" barrel. I can't tell from the picture. If the actual barrel is less than 16 inches, the flash hider is permanently attached so that you don't have a SBR which requires a $200 tax. If it is removable, you need about $80 worth of tools to not scratch your gun up. The easiest way is to remove the rear take down pin. Pivot the upper forward. Remove the bolt carrier group. Prop the front of the rifle on something about 1ft tall. move the butt stock around until you can see something unique down the center of the barrel 20 to 100 yds away. Without moving the rifle, adjust the sight so that it lines up with what you see in the center of the barrel. It is then bore sighted. Have you ever seen what happens when someone leaves a bore sighting device stuck in the end of the barrel and shoot their rifle? Instant scrap iron. If you don't like this idea, get a bore sighter that is a cartridge instead of one that you stick in the end of the barrel.

Noveske Sound Amplifier

The new chinese clones (aka ACM) come with the flash hiders glued onto the gun. You basically have no options as to attaching it to the gun unless you were to take out the entire outer barrel and replace it with another that has a threaded barrel.

Edit: I don't know what I'm talking about huh? Go ahead kid, put pressure on the flasher and you'll strip the threads.