High quality, fully multi-coated optics, and the commitment of a Burris Forever Warranty make up a solid nucleus, and, as you'd expect, the line brims with innovations and firsts. Like handgun scopes with a parallax adjustment to accommodate both long-range and close quarters shooting, and the first variable handgun scope on the market.Two legendary Burris technologies are perfectly suited for the nuances of handgun shooting. Posi-Lock secures the point-of-impact in the face of abusive recoil. The high arching trajectories of many handgun calibers complicates shooting long range, unless the scope is equipped with Ballistic Plex. Visit burrisoptics.com for complete details on how effective Ballistic Plex is with specific caliber/load/barrel lengths.