Yes it is real. Notice the bottom line. There is a company that makes replicas of old guns, that are paintball guns. I forgot the name though. They are all built off of spyders though.
Nope, that's a rain maker. I saw the same thing for sale in some online auction, Yahoo I think. It's supposed to weigh as much as the M-60 or what ever it's supposed to be, but still sucks like a Rain Maker. And if you don't believe me when I say it's not a spyder, just look at where the bottom line actually goes to.
Personally, I'd never carry that thing around, because it's just one of those set ups that tends to give painball a bad reputation.