UTG SCPSW100B Index Wheel for Side Wheel AO Scope 100mm

Utg 100Mm Diameter Side Wheel Add-On For Making Finer Parallax Adjustments
Compatible With Side Ao Accushot Optics And Not Compatible With Bubble Leveler Side Ao Accushot Or Side Ao Bugbuster Optics
Aids In Finely Tuning Parallax Adjustments
Aircraft Aluminum Construction With A Matte Black Anodize
Laser Engraved Distance Markers In Yardage Increments