-Insert Lecture On Why This Can't Happen-
Let's think about it shell we?
Hmm lets see... I'm not asking for anything Realistic as the airsoft gun, most just want something modeled defaultish-ly, you know, kind of like that assault rifle thing. Yeah yeah that's cool.
Probably let's see here... 2 Barrels maybe? Kinda like the assault rifles barrel, and a shotgun barrel? Hm...
Then another nod...
And then we could have the receiver, maybe 2 again, like you know, a shotgun receiver, and the default gun receiver?
And something else... Ah yes,
1 Scope, (just for looks) [Enable,disable]
Shouldn't be to much datablocks right? Again I'm just saying, simple looking defaultish stuff.
Then Just a plain handle, nothing really to customize.
Then 2 clips and a no clip thing, a drum mag, and assault rifle?
[Cancel out that bullet thing]
How many datablocks would that lead me down too?
(Drum roll please)

PS: I honestly don't want anyone upset about the fact that I have made a request of something that seems "Impossible", I know It seems that way, but there really isn't a need to get your jimmy's rustled over it.