http://www.warpig.com/paintball/tech...os/index.shtml
^^^
Not the exact same thing, but pretty similar. They are good guns, just a little heavy since they have a lot of stainless steel parts. The bolt can be sketchy. A lot of people say ANS pnuematics are scetchy, but the newer ones are supposed to be better. I'm not a big fan of the Jackhammer reg. though.