They don't. They use either Q-loaders, or low profile feed-tubes.
One that you can not touch and be around does that answer your question Not sure what that answer means. It depends: most snipers use a large caliber sniper rifle of some kind, but not every one uses exactly the same rifle. Most major manufacturers make some sort of sniper version of the rifle.
No, you need the correct size for the correct part.
snipers
No. There are no urban areas that allow paintball.
In paintball there is very little use for magnifying crosshair scopes. The greatest magnification you would ever need is a cheap 4x scope, and that would only be accurate for a few guns, with impeccable paint to barrel match. The only guns that could use a scope accurately are the T4 first strike, and the SO longbow. Most "snipers" use red dot or reflex sights, because it allows you to show where your shot will go(as accurate as paintballs can) and will not give you tunnel vision. Some scopes also cannot work with a paintball mask on.
Any standard kit will be fine for a spyder.
Well Snipers were in evrey squad but just a Sniper team was used for Recon.
No. Nothing dissolves in the process of a paintball gun firing.
tools of the trade
There is none, only use pellets designed specifically for paintball.
I have both and honsetly i use the paintball gun more =)
No, paintball co2 is much higher pressure.