57 SME Receiver Sight with Target Knobs for Mauser, Springfield & White Systems

Lyman 57 receiver sight features include 1/4 minute audible click micrometer adjustments for elevation and windage, quick-release slide, coin-slotted "stayset" knobs and two interchangeable aperture discs (large hunting aperture and small target aperture) for any shooting condition. This receiver has target knobs and fits Mauser, Springfield and White Systems firearms.