<br /> <b>Picatinny Side Mount Adapter, 90-Degree, Black:</b> <ul> <li>This base (90 degree) is specifically designed for use on S&amp;W K, L, N and x frame revolvers</li> <li>Made from solid steel to handle recoil, this base is the first of its kind</li> <li>The S&amp;W rear sight is removed to install most scope mounts</li> <li>Warne's base allows the user to reinstall the rear sight and front sight onto the top of the base</li> <li>The factory sights are then fully functional</li> <li>The base also accepts all Weaver style scope rings</li> <li>Aluminum, space-saving, side-mount adapter fits on Picatinny rails to let you mount flashlights, laser-light systems, red-dot scopes, and more</li> <li>Attachment leg doesn't interfere with the mounting of your scope; no need to sacrifice optics for accessories</li> <li>Will not fit Weaver bases</li> </ul>