Put a weight on the inner JAC barrel and you will get some serious recoil. Some Pare's in the phillipines converted theirs to jackhammers.

Some 'bolt blowback' rifles are alright, done before, but not the greatest performers when compared to a JAC done up right. I think COKSAI was the only one to do it right, YE (Youth Engineering) had some QC issues.

If you saw the internals of a JAC you'd understand I am sure - not worth the effort.

Edit. Sorry guys.

Yeah, just like all the other airsoft guns we use.

Edit.
Ok, my bad. I thought it was was 500fps or 5.7 J.

What a fucking contribution to a thread, boy...

Wrong. It has to be over 500fps AND over 5.7 joules of energy, which it is not.

mtallman... let me get this straight; you are telling Poncho that he does not know what he's talking about?
Ohhhh, I want to watch this one.

No no, I don't think it was directed towards me - I think he was telling everyone what his misassumptions were...

Damn, I have to put away the solar flare protective glasses...

MAD BULL makes a co2 thing for aeg's i think. Replaces the gearbox and motor...

Hi all:

I am now designing the GBB mechanism and will start to make prototype soon.
It will be like Modified Escort System, made in Canada

Its recoil will be HARD KICK for realism too!

Will you be making a complete gun like you said you wanted to, or are you planning on just making a drop-in GBB mechbox for existing guns?

Sounds awesome. Is adjustable FPS possible?...

If you can, a drop in mech that runs on external air would be best.... don't make a C02 cylinder in the grip like they did.

Also, add the fully auto thing in there too. :-D

Definately interested.

Hi:

Here is the 3D model of my GBB mechanism for C7A2 (work-in-progress).
I am designing the delayed blowback mechanism.