The 1-4x24mm LEVEL HD IR HRS .223 BDC Rifle Scope aims at providing the user with the latest in optical technology. Fully multi-coated optics and a glass-etched HRS Quick Shot Reticle with bullet drop compensation (BDC) give the user a clear view of their target, and external locking turrets allow for quick adjustments to windage and elevation. Using the external rheostat, the user can quickly adjust the color and the brightness of the HRS reticle to better fit the current lighting environment. A solid monotube construction helps protect the internal optics from shock and impact, and are built to withstand recoil from AR-15 sporting rifles up to large caliber hunting rifles. Level HD Rifle Scopes are purged with argon gas to prevent internal fogging, even in extremely cold weather, and are coated with phase 3 hard anodizing to prevent scratching.