GR4 Beavertail Grip Safety Stainless Steel .220" RadiusDescription Machined from: Stainless Steel Finish: Stainless Steel Compatible with: Frames cut for a .220" radius, like Springfield or Capsian Not compatible with: The Wilson beavertail cut. In order to utilize our beavertail grip safety on a Springfield or Caspian frame, you will need to weld the tangs. We have had this on our drawing board for years and finally we are manufacturing a beavertail machined from bar stock in stainless steel and carbon steel. Our grip safety will fit the Ruger SR1911 with minimal fitting. Through our years of experience building guns, we were able to come up with a lot of improvements over the various beavertail offerings available today. Our improvements include the following: – Our beavertail is wider than the frame @ .770 (allowing you to the blend the beavertail to the frame, and not the other way around) – The pin hole is reamed to .158 (improving fit and ambi's function) – Lower bottom grip surface (no need to break into the thumb safety hole) – Longer bottom (less gap between beavertail and main spring housing) – Wider bottom to "fill" frame better (around .617) – Bottom radius smaller to better fill frame radius cuts – .308-.309 wide to fit frame ears snug (no rattles) – The pad is fuller and blank allowing for artist's interpretation – No pits, as the part is machined from bar stock – Radius is .245 to better fit frames that are pre cut to .250 – Bottom angle better matches main spring housing again for less gap.