Tuned & Hardened For Lasting Performance
Machined with exacting tolerances; hook is .005" closer to rim to give a positive, non-slip grip on the case head. The very precise hook point is hardened to Rc 58-60, will not lose its edge, even after years of use.
Big Book Catalog, Issue:72, Page:161
SPECS: A-2 tool steel, in-the-white. Includes replacement spring. Fits Ruger MKII, MKIII, MKIV and 22/45 pistols; 10/22® and 10/22® magnum.