Hey it’s the end of the work week, so we thought you guys might enjoy a little display of honest-to-goodness American .50-Cal firepower. Today’s video features the General Dynamics GAU-19/B Gatling, shown in a vehicle mount (Part 1) and helicopter side-mount (Part 2). The HumVee-mounted version of this bad boy delivers 1300 rounds per minute of .50 BMG ammo. The effect is awesome to behold. We wouldn’t want to be on the receiving end of a GAU. The original GAU-19/A had a selectable rate of fire — either 1,000 or 2,000 rounds per minute. The GAU-19/B, introduced in 2012, provides the same firepower in a much lighter platform, weighing 106 pounds (not counting ammo storage systems).