Nice "e-zine". Good topics, but it doesn't seem to go any deeper than the information I can already get online. Somebody who can get the inside scoop on the newle attaching a m203 to a MP5 are:
a) The weight needs to be distributed through the frame of the gun because it may result in barrel wobble. If you have a full metal body and the G&G RIS is all metal, I'm pretty sure this won't be a problem.
b) The barrel of the M203 needs to be shortened which I've heard can be difficult. Otherwise the M203 sticks way out from the end of your gun (depending on which MP5 you have -- supposedly it looks better on an SD).
An alternative would be the new MM mini launcher. It too fits on a rail and is far more reasonably sized for an MP5. The only downfall is that it only takes the MM "shower" grenades that fire 165 bbs at a time. Reportedly, these are extremely effective close quarters but lack distance. You can see one attached to an MP5 here:
http://www.caw.co.jp/mosquito/minilauncher/index.html
