The PRR swivel position retainer allows optical components to be removed and inserted repeatably in an optical system. Its one arm is designed with two contact points to hold positions of round optical components. The other flat arm ensures precise repositioning of squared-off components without unwanted rotational errors. The retainer features a swivel head for 270° rotational adjustment, providing maximized mounting flexibility on the optical table. Its base incorporates a ring magnet, holding the retainer in place prior to finding the most suitable mounting hole on the optical table and securing it with a 1/4-20 or M6 cap screw.