These bolts are about as close as you will ever see to the real Russian sniper bolt. The handles are welded onto the body unlike others that I have seen that are soldered into a hole drilled into the main bolt body or threaded in and Loc Tite used to keep it from turning. I know as I have repaired these. This bolt will work with the PU, PE, PEM, PO and POSP scopes. This bolt will not work with the ATI or Rock Solid scope mounts.