Smith & Wesson K & L Frame Rear Adjustable Sight – Models 14–19, 66, 67, 586 & 686 (3"+ Barrel) | Part# KL162B AirLite The thumb piece and nut

The thumb piece and nut require proper installation to ensure reliable cylinder release operation

and law enforcement supporters

they deliver the timeless aesthetic and solid feel that N Frame revolvers deserve

This critical trigger mechanism component ensures smooth trigger reset and reliable double-action operation

Smith & Wesson K & L Frame Rear Adjustable Sight – Models 14–19, 66, 67, 586 & 686 (3"+ Barrel) | Part# KL162B AirLite The thumb piece and nutSmith & Wesson Revolver K & L Frame Rear Adjustable Sight Old Style Square Tang Restore precision to your revolver with this factory style old style square tang rear adjustable sight, built from blued steel for a classic finish that resists corrosion and blends seamlessly with your firearm. Features a crisp, repeatable elevation stud and screw for reliable zero retention shot after shot. Specifications Part #: KL162B Style: Old style square tang rear