Marbles Long Range Upright for Marble's Improved T Sight

This is the Long Range Upright Stem for the Marble's New Improved Peep Tang Sight Base. This upright stem comes with one aperture, 3/4" .032 hole target aperture. The distance for the Longe Range Upright Stem is approximately 700-1000 yards. This stem is interchangeable with the Short Range Upright Stem(#Mar990100) with approximate distance of 0-250 yards, Standard Upright Stem(#Mar990110) with approximate distance of 200-500 yards, and Mid Range Upright Stem(#Mar990120) with approximate distance of 450-750 yards. (Some guns can not use the Shortest Upright Stem because it does not clear the receiver to the lowest possible upright.) The distances will vary do to caliber, barrel length, make and model of the rifle.Not for use with standard base, must be mounted on an improved base.