Ruger cylinders supposedly need to be fitted to the individual revolver. I have never run across anyone yet rich enough to afford extras for them. However, the italian made 58 remingtons are ideal candidates for extra cylinders and I outfitted mine with 6 extra at $26 and then the price went up to about $36 now. The remington can switch cylinders in a flash. See the movie Pale Rider. Even Clint can do it quick. I don't even load my cylinders for the remmie inb the gun. I made a loading stand, but you can buy one already made up. Cabelas has all the stuff, Rems, cylinders, loading tool. Hope that helped :-)