The Marble Arms 57-W Front Sight is a precision barrel-mounted rifle sight designed for .570" diameter barrels with a 1/16" sight height and attractive brass gold finish.Marble Arms Model 57-W Front Sight.570" barrel diameter compatibility1/16" sight height for optimal target acquisitionBarrel-mounted design for secure attachmentBrass construction with gold finish for durability and visibilityIdeal for rifle enthusiasts and hunters seeking reliable iron sights with classic styling and precise engineering for improved accuracy and target alignment.