ESB blaster .::NEED SOME HELP::.


I'm building my ESB blaster useing the Obi Wan's Jedi Acd. tutorial. they used a Crossman .357 pellet pistol as the base. Right now I've got a cheap plastic cowboy gun. I can't find a crossman pellet pistol or anything close to it. Help please, where I can get something close to it or cheap. Thanks