Sightmark SM13138CR1 Citadel Black Hardcoat Anodized 1-10x 24mm 30mm Tube Illuminated Red CR1 Reticle The Citadel riflescope was designed for both amateur and professional shooters. Features exposed, low profile locking turrets to make adjustments extremely easy; second focal plane; red etched reticle illumination; fully multi-coated optics, one 30mm aluminum tube, fog, shock and waterproof. Includes Throw Lever, flip up lens covers and battery.