The X-Caliber is a Contender look alike. About the only differance is instead of pulling on the trigger guard to open the barrel you push a button on the frame and pull down on the barrel. Without the trigger guard spur it sure is alot easier on your off hand finger to shoot. I believe barrels were made in 22lr,22mag.,357mag.,and 44mag. Hope this clears things up a little.
bobg