Footage of the M3P and M3M (GAU-21), the Browning .50 caliber (12.7x99mm) single-barrel high rate-of-fire machine guns in the M3 series. The M3P machine gun is optimized for remote firing from aircraft, ground vehicles and naval craft providing offensive and defensive firepower ranging out to nearly 1,850 meters at a rate of 1,100 rounds per minute. The M3M (GAU-21) machine gun is suitable for rotary-wing aircraft applications providing offensive and defensive firepower ranging out to nearly 2,000 meters at a rate of 1,100 rounds per minute.
p.s. best use of my taxes I have seen in awhile. OooRah! its a Marine thing
Actually a pretty good waste of ammo. Realize it's motly training vids but imagime a poor WWII AC pilot with maybe 1k rnds in the wings. Pray and spray gets you maybe one good stafing attack. We used 5/38s and usually got the sleeve in a shot or 2.