Sightmark Citadel 1-6x24 CR1 Riflescope is designed with real shooters in mind, the Citadel 1-6x24 CR1 features a second focal plane BDC reticle calibrated for 55gr 5.56/.223, red reticle illumination for contrast against targets and low light shooting and fully multi-coated optics. Capped, low profile turrets protect zero and add to the Citadel's no-nonsense, subdued appearance. A single-piece, 30mm tube and aircraft grade aluminum construction make the Citadel extremely du