The only difference is the grip frame, and hammer. The cylinder frame is the same so the cylinders will fit, with maybe a bit of tweaking. Since there is a bit of manufacturing tolerance, that means one cylinder might have a bit longer boss or tighter ratchet, so there is a wee bit of 'slop factor' that means handfitting. Some drop in, within acceptable BC gap and end shake, others have to be filed or shimmed. You have to trial fit, or have the dimension of your existing clyinder and buy one cloe to that or a bit longer. It's easier to shorten the boss than to shim it for fit.