Ruger M77 Mark II Standard, Sporter, Express, Magnum, International, Number 1 Light Sporter, Medium Sporter, Tropical, International Rear Sight Williams Gib Lock Clamp

This is an original factory replacement part. Factory replacement parts are manufactured to the exact same specifications and tolerances and use the same manufacturing materials as the original parts which guarantees excellent fit and reliable operation. Disassembly and assembly may be required to replace part. Some parts may require installation by a qualified gunsmith.