Vortex Optics Viper PST First Focal Plane Riflescopes Radius bar fiber optic turret rotation indicator provides illuminated and tactile point of Reference for turret rotations Radius bar fiber optic turret rotation indicator provides illuminated and tactile point of Reference for turret rotations Type-3 hard-coat anodization is durable; the low-glare matte helps camouflage the shooter's position Radius bar fiber optic turret rotation indicator provides illuminated and tactile point of Reference for turret rotations Radius bar fiber optic turret rotation indicator provides illuminated and tactile point of Reference for turret rotations