The miniature optic has made its way from competition to self defense, and finally to law enforcement duty. The optics project a dot on a screen, replacing a traditional iron sight alignment with superimposing a dot over your target. This has been very helpful for people with aging eyes, but it also allows many shooters to use a target focus and shoot both eyes open with ease.
The Holosun miniature handgun optics, once discounted as a cheap and unreliable optic, are now a very durable option for self defense or practice. At a price below $300, this optic can mount on any optics ready firearm that accepts a Trijicon RMR footprint.
The size of the optic is still very small, and the solar panel on the top will allow the optic to use the sun to power the optic when available. Though the solar panel will extend battery life, Holosun claims a 50,000 hour battery life on power level 6. That's over 5 years!
As with any price of equipment, consider the potential positives and negatives before purchasing, but the micro red dot seems to be one of the best ways to increase your potential.