This video by AiirSource Military features clips of U.S. Marines participating in a Weapons and Tactics Instructor (WTI) Course 1-16. The video shows the Marines conducting aerial gunnery with the GAU-17 Minigun and the GAU-18 M2 machine gun on an UH-1Y Venom helicopter near Yuma, Arizona.
The GAU-17 Minigun is a flexible mount firearm that is mostly used by the United States Air Force (USAF) and United States Navy (USN). The GAU-17 Minigun features Gatling-style rotating barrels with an external power source, typically an electric motor.
The term “Mini” in the “Minigun” is used to denote the firearm’s slightly smaller size in comparison to bigger caliber designs that use a rotary barrel design, such as the 20-millimeter M61 Vulcan. The term “gun” is used to denote the firearm’s use of rifle caliber bullets, instead of shells used by an autocannon.
The GAU-18 M2 machine gun is a lighter variant of the M2 and M3 models of the .50 Caliber Machine Gun. This machine gun is used primarily on the USAF’s MH-53 Pave Low and HH-60 Pave Hawk helicopters.
The GAU-18 M2 machine gun is typically set up as a left-hand feed, right-hand charging weapon. On the HH-60 Pavehawks that use the EGMS (External Gun Mount System), however, the GAU-18 M2 machine gun is isolated from the shooter by a recoil absorbing cradle, and is fed by a chute adapter attached to the left or right, allowing the machine gun to receive ammunition from externally mounted ammunition containers holding 600 rounds each.
The UH-1Y Venom helicopter – also called the Super Huey or Yankee– is a twin-engine, medium-sized utility helicopter built by Bell Helicopter under the H-1 upgrade program of the United States Marine Corps.
The UH-1Y Venom has a four-blade, all-composite rotor system designed to withstand up to 23 mm rounds. The helicopter also features upgraded engines and transmission, as well as a digital cockpit with flat panel multifunctional displays.