grip frame of blackhawk was smaller, more colt like with the 3 screw. new model is unchanged as I know of. Vaquero has been changed to more like colt. there is bisley in all ruger single actions, but my understanding is ruger blackhawk, non 3 screw, has one grip. Man, if you do think of trades, i am drooling over this one!.....glock 19.....30.....SW686?....got tempt you!