Colt SAA grips, Elk bark or no bark, requires grip frame with your screws to fit the grips to your exact frame due to variances in frames.
Colt SAA's require fitting, period. To do that I must have your gun or grip frame complete with mainspring, trigger guard, backstrap and mounting screws. Sorry, your present grips are no help to me fitting the new grips. You can have them in Elk with or without bark. I can vary the thickness to your desire within reason. Call and ask about any special concern or specs you are interest. My turn around time is normally two weeks or less.