BURRIS FASTFIRE III SIGHT PICATINNY MOUNT 3 MOA DOT The FastFire 3 is the best-selling red dot sight from Burris. It is available with a 3 MOA or 8 MOA dot. Light and tough, the FastFire 3 series puts an unmistakable, bright red dot on your target to give you an immediate speed and accuracy advantage. Can be used as a primary sight or paired on top of an existing sight. Automatic brightness sensor adjusts brightness to match the environmental conditions; also has 3 manual brightness settings; Battery access is conveniently located on the top of the sight; automatic time-out feature after 8 hours helps battery last up to 5 years; Available with Picatinny/Weaver mount for mounting on rifles, handguns and tactical shotguns; Available with No Mount, which allows you to match it with the perfect mount for your use, whether it's sidearm, co-witness on an optic like an AR-332, shotgun, or even the Burris Spotting scope.; The FastFire 3 will work with virtually every "optics ready" handgun.;