Vortex Diamondback Tactical 4-16x44 Rifle Scope, First Focal Plane - DBK-10027 Exposed tactical turrets built for dialing elevation and wind age allow quick and precise bullet drop and wind drift compensation at extended ranges. When we say precise-we mean it. These turrets track better than any bloodhound and reliably return to zero every time. A zero-reset feature lets you re-index the zero reference marks on both turrets after sight in, while fiber optic rotation indicators integrated into the turrets provide a visual cue of your turret's position.