Brass Eagle Eradicator, used shape, cheap blowback. I got this with a Termite gun and it's just a junky parts gun. Doesn't seem to recock without a large effort. Aired it up and it holds air but it wouldn't cycle so I'm not really sure what's going on with it. Looks like something might be blocking the hammer from closing all the way. I think the barrel is spyder threads but I'm not really sure. Just a junky project gun.