This gun was made sometime in the 1920s. The barrel is likely a factory replacement. The gun has been fired quite a bit but still works very well. The gun has been thoroughly cleaned. We have 3 full boxes of 1970s era Remington Kleanbore ammunition, and 1 box of 46. If you are able to sustain the ammo, this gun would be a fun plinker. This gun is chambered in 22. Win Auto. It will NOT shoot any other 22 caliber ammo.