Lyman No. 45 side-mount peep sight comes with ORIGINAL box and instructions. This side-mou nted peep sight was produced for the Winchester Model 1903 and Model 63 rifles, PATENTED IN 1907 and made through 1964. . A very rare ORIGINAL Lyman sight FOR these Winchester .22 caliber rifles, and one of the most accurate rear peep sights on the market today.
