I have two brand new, never fired cylinders to convert a Ruger Old Army cap and ball 45 to be able to shoot 45 long colt regular ammo. Please see the link below for more info. I would sell them for $210 each.
http://www.kirstkonverter.com/ruger-old-army.html
http://www.kirstkonverter.com/ruger-old-army.html