The Marble Arms 57-W Front Sight is a precision rifle sight designed for .570" barrel mounting with a 1/16" white steel bead for enhanced target acquisition.Marble Arms 57-W Front Sight.570" barrel mounted design1/16" white bead for visibilityDurable steel constructionBarrel-mounted installationIdeal for rifle enthusiasts seeking reliable target sighting with traditional white bead visibility for hunting and target shooting applications.