Early DS2 revolvers were close to the older D frames. Later ones used the beefier Magnum Carry topstrap and cylinder. My 3 inch DS2 has the thicker top and a cylinder long enough for 357. If Colt were smart enough to bring these back in 2 ,3 and 4 inch versions ,the competition would be in serious trouble ,and Colt fans would be very happy. Throw in an adjustable sight vent rib version in 22 ,22 mag and 357 ,and viola ,the game is afoot Watson.