The Sightmark® Triple Duty M4 1-6x24 CDX Riflescope features a Circle-Dot Duplex reticle and a 1-6x magnification is ideal for three gun matches, target shooting and hunting. Equipped with cutting-edge glass and fully multi-coated optics for exceptional clarity, the Triple Duty M4 1-6x24 CDX transmits a bright, crisp image that makes tracking and shooting targets almost effortless. The unit features a one-piece 30mm tube that delivers optimal light transmission and a wide field-of-view. Built for maximum reliability in harsh weather conditions, the Triple Duty M4 1-6x24 CDX is O-ring sealed and nitrogen-purged, making it fog proof and water resistant. This precision scope features oversized, locking windage and elevation turrets with ½-inch MOA clicks, providing an additional level of accuracy and ensuring that the scope stays zeroed. The Sightmark Triple Duty™ series of riflescopes are complimentary to any shooter's arsenal.