This might raise some eyebrows from FPS gamers who dread of gamers who use aimbots to have a massive advantage in FPS video games. But this one is a drill designed to increase target acquisition speed as demonstrated in this video by T.Rex Arms... "Lucas explains and demonstrates his "Aimbot Drill". A simple yet effective shooting drill to practice fast target identification/acquisition.

He's running his BCM rifle with an Aimpoint T2."