Firearms Titanium Gatling Gun – 3,000 Rounds Per Minute! Emmanuel June 1, 2015 2.6k Views The Dillon M134 fires 3,000 rounds per minute, or 50 round per second! Constructed of titanium, it is 20% lighter than other guns in its class and can be mounted on a variety of platforms. It fires a 7.62 NATO rounds. Watch those tracers!!