MK760 / S&W Picatinny / MIL-STD-1913 optic rail mount.
Clamps over the rear sight and on the receiver tube. No modifications to the receiver. No metal on metal contact. Multiple contact points, will not slide around on the receiver like other clamp on designs as it grabs the rear sight base to snuggly hold it in place.
Made of PPS-CF (PPS-CF is a composite material made from carbon fiber-reinforced polyphenylene sulfide, excellent resistance to solvents, and heat (functional temperatures exceeding 200°C))
Some minor fitting of the mount maybe required for proper fit.
Please note this item is made to order, and the estimated shipping time is 2-3 weeks from the date of purchase