Watching the video with the copters make their passes, it’s a miracle to me they don’t shoot themselves down on egress. Just look at the stuff flying off in every direction.
More on the M134D itself:
Dillon Guns are reliable. The M134D has system life in excess of one million rounds and an average time between stoppage of 30,000 rounds. In the unlikely event of a stoppage the weapon can be serviced and made operational again in under a minute. The multi barrel design means that each barrel only experiences a 500 round per minute rate of fire. This allows for repeated long bursts of fire and a barrel group life of 200,000 rounds.
Dillon Gatling Guns are in service with the US and Allied Armed Forces. The standard application is as helicopter crew served and fixed forward fire installations. In addition to their more traditional roles, Dillon Gatlings are supplanting M2 50 cal. Heavy Machine Guns and M240’s on a number of the US Army’s vehicles. Dillon M134s are also in service with the US and British navies in the fleet protection role and Special Operations fire support role.
Dillon M134 Gatling Guns are entirely new production weapons. Dillon guns are sold as complete weapon systems or as component upgrade packages for older GE M134 systems.
Part Number: M134D
Fixed Forward Fire: 56.9 lbs
Crew Served Gun: 66.1 lbs