Easily adjust from shooting competitions to big game confrontations with the Trijicon® AccuPower® 1-4x24mm, Red LED Segmented Circle Crosshair, Rifle Scope. The BDC reticle is matched to .223/55 grain rounds for ballistic drops out to 800 yards at maximum power and the segmented circle at 1X frames a standard target for quick hits. Red LED illumination provides added contrast to incorporate the "two-eyes open" Bindon Aiming Concept. 11 brightness settings with "off" feature between each setting saves battery life and time returning to your desired light level. The 30mm hard anodized aluminum tube is lightweight and can be mounted using rings or quick release mount.