Thanks for the quick reply!
Well, I'd figure, evenually I'll need to upgrade the whole internal, so why not buy the whole set and just get it over with in one shot, eh?
I'm planning to keep my gun looking like as stock as possible. So that means just all regular parts(other than internal). Maybe a scope that can be added to my handle. For sight, I'm keeping the triangle front and handle back.
So what you mean is the "A" behind their name is just for external means? So if I get the internal stuff that says "M16A2" for my "M4A1" it'll still work?
My plan is to get a m16 length for outdoor and m4(shorty) for indoor(there's too many damn corners for where I play).