Slowly and gently break the sharp edge by holding some 320 grit sandpaper at a .45degree angle to the edge. go easy and the sharp edge will disappear. If you do it right it wont be noticeable, you only need to remove a small amount of metal. Finish with 600 grit sandpaper. I have done this to my sp101. the front edge of the cylinder was very sharp on mine and it would have torn my holster. Clean the gun well when you are done.