Ares said:
Smart man. I would choose that. First thing is to get the general look.
First of all, if your going to be using the gun and expect it to work for more than a month, don't go with
ANY CYMA gun. Quite frankly, they suck and are only good for use as a base gun for blasters and the like; this coming from multiple people who actually skirmish with airsoft guns and from my own personal experience with CYMA. So, if your just doing it for the looks, or you don't know what your doing and don't want to waste your money on a highend gun that your probably going to break, go ahead and get a CYMA one, just don't expect it to last.
Tokyo Mauri is the best Airsoft company
For you being such an airsoft "pro" you got this wrong. Tokyo Marui is not the best and while they are a good company and this matter is actually a matter of opinion, I think that STAR, Systema (Best in my opinion), or even Classic Army fit the bill better than TM.
I'm not trying to bash you, it's just you repeatedly give out advice to these
that could be misleading. (I do agree that if they're not skirmishing with it, CYMA is a good choice though.)
Now that I got that out of the way, if I were to go about this and didn't have all of my prior knowledge with airsoft guns (Breaking many gaining that knowledge) I would go with the pistol first, and this is what I'm suggesting for massivek to do. Get a decent electric pistol that resembles the halo one a little and do some body work to get it to look right, maybe even make a custom 'bullet' counter for it.
Knowing what I currently know though from modifying my own aisoft guns, owning a couple of high-end ones that I work on, and that I would want to be able to actually skirmish with what I built; I would go with either the SMG because I need a sidearm, or the AR.
Stuff I would do (Not necessarily for the inexperienced)
For the SMG I would go with the TM MP7
http://www.airsoftgi.com/product_info.php?...roducts_id=1420 because they are a respectable company that makes quality replicas and because the MP7 is close to the SMG. Then I would go in with some High Impact Styrene and do some body work on it. Add a stock and possibly switch the magazine to a P90 magazine such as this one
http://www.airsoftgi.com/product_info.php?...products_id=110 and add a custom feed system using a piece of tubing so that it attaches to the side. (That would be a difficult part) Or, if not that, modify the magazine so that it fits flush in the handle and make a dummy mag to replicate the SMG one.
As for the Assault Rifle, I'm thinking that I would start with the Classic Army AUG
http://www.airsoftgi.com/product_info.php?...roducts_id=1908 and while I haven't taken one apart personally, judging by this video
http://www.youtube.com/watch?v=OHH6DahJ41Q, it looks as if it has the kind of mechanism you'd be looking for for the AR. Then it's just some body work, maybe a nifty ,microcontroller controlled 'bullet' counter and a handle relocation for the AR. And looking at this, I'd say that the AR would be easier than the SMG.
Now, please note to anyone who actually attempts something like this; If you don't know what your doing and/or haven't worked on airsoft guns before go with the CYMA stuff because airsoft guns require skill and patience to get to work right and you don't want to waste your money on a high-end gun if it's just going to end up non-functional.