Oversize For Fitting & Correcting Timing
No more heating and bending factory hands to correct faulty cylinder timing. Oversize dimensions can be easily fitted to all S&W "K", "L" and "N" frame revolvers. Machined from tool steel, heat treated and then precision ground to final dimensions.
Big Book Catalog, Issue:67, Page:228
SPECS: Tool steel, in-the-white. Gunsmith fitting required.