EOTech Model 512 Black
The EOTech series of sights revolutionized red dots forever with the unique holographic technology and a large viewing window. The 512 in particular is preferred by many Special Forces units for its large 65 MOA circle during close quarters shooting and a 1 MOA dot in the center to aim more precise shots. As an added bonus, the large circle dot arrangement is a great rangefinder in a pinch.
The combat-proven EOTech 512.A65 is powered by two AA batteries and provides over 1,000 hours of constant-on time with lithium batteries or around 600 hours with standard alkaline batteries. Since this sight takes common batteries and has a programmable automatic shut-down timer, it is much more convenient to keep your sight powered and available when you need it most.