She decided to switch to peep sight and is preparing for Olympics. The rear peep sight of the Stgw. It had adjustable peep sight apertures, a hooded front sight, and a small, removable magazine. The rear sight is an aperture/peep sight mounted on a cam. The Redfield scope mount removed the rear peep sight that was standard on the M1903A3. The rear peep sight is a noted improvement over the standard Kalashnikov notch and post.