Finely machined steel receiver sight clamps to factory dovetail on RugerA(R) rifles; serves as an excellent primary hunting sight in situations where a scope may not be practical. Carry in your pack as an emergency sight to save your hunt in case of scope failure. Install and remove without loss of zero. Height matches most M-77A(R), 77/22A(R) and #1 factory front sights. Includes .093" and .125" apertures that draw your eye to the sight for fast sight alignment. Adjustable for windage and elevation. Mfg: Necg SPECS: Steel, blue finish. 1-1/4" (3.2cm) long. 3/4" (19mm) high. 1-1/4" (3.2cm) wide.