The magic 8 ball says ''maybe yes,maybe no''.Seriously,pard my best bit of gun tinkering yet was to modify and install a Thunderer grip and gripframe assembly on a Pietta 1862 Police ...actually,they are NOT a police,but still a pretty cool gun built on a '51 navy frame ,by Pietta.I think what they are is a half fluted cylinder 1861''baby Army,but be that all as it may,I tried the grip on a coupla guns,to see which one I was going to put on,and learned it's pretty much up to how much fitting you want to do.It looked OK on my old ''Armi Jager' and fit pretty well on my ASM's but they were longer in the trigger guard part of the gripframe.The trigger guard part of the grip frame that came with the grip was just a smidge wide,but if I'd been set on fitting the grips to that gun I could have mated those surfaces with a file of more importance is do the grip frame screw holes,and do they take the same sise screw?In the case of the Pietta the srewholes on the Uberti neede to be hoggered out a bit,which I did with a hand drill,and Swiss needle file set.Turned out good traded that gun and a .38 Uberti Lightning for Trapdoor Springfield.Sooooo,to sum up ,it depends.