Blowback system to King arms m4

[Aldo69]

I'm Getting the King arms m4 and later on I want to put a G&G Blow back system and an R.I.S, I'm trying to look for the whole gearbox set or the shell w/ pneumatic blow back.

Where can I find this?
Is it possible to use the original Colt m4 King arms Metal body?
Will it be bad for the gun?

I'm learning the v2 gearbox from my friend so I have some sort of experience and I want to know if I can be able to do this.

[m102404]

Have you seen/used/played with the G&G pneumatic blow back system at all? If you haven't...I could not suggest more strongly to simply avoid it. It is a gimick...and a pretty chintzy one at that. It does work (in that the fake bolt goes back and forth)...and it does actually seem to hold up with use. But on a scale of 0-10 of "that's great"...it's ranking a 1-2 (IMO). The gimmick/cheezy factor outweighs any goodness.

If you've seen it, love it, must have it....then that's up to you. I have not personally tried to convert that system into another body....so sorry, can't say how doable/not-doable it may be.

[Rooster]

Not to mention the King Arms has a locking bolt for adjusting hop up. So it wouldn't work right without disabling that first.

[Aldo69]

Thank you for replying, I'll just keep the original features.