Lyman 66 Receiver Peep Sight - 3662265

A receiver-mounted peep sight designed for flat-receiver firearms including lever-action rifles like the Winchester 94 and Marlin 336, as well as modern shotguns and SKS platforms. Features 1/4 minute audible click micrometer adjustments for elevation and windage, quick-release slide, and two interchangeable aperture discs for hunting and target shooting. Includes coin-slotted stayset knobs for secure adjustment retention.