Axeon Optics MDSR1 delivers high performance in a lightweight, compact, and low-maintenance package. This 1X20 Micro Dot Sight features an optimal for carbine use 2 MOA red dot reticle and a super long 30,000-hour battery life with auto shut-off. This sight is ready to mount on your MSR platform with the included co-witness riser base. Windage and Elevation adjustment are made in 1/2 MOA increments and is powered by a single CR2032 battery. When technology meets affordability you're clearly on target.