Thanks , doulos ....your right , according to the Ruger website , its 16 bucks ? if I understood it right. Think I will try it , Is it an easy change out ? It appears the rear blade is just a matter of sliding the old one out and replacing it. The front ,however , appears like it may have to be drifted out of the dovetail ??......I don't own any brass punches....Thanks again, Mike