Barry,
The first one like this i built on a AR-15 , but it cycled so fast, when you bit down on the bite switch it would rip of 3 or 4 rnds, the AR-10 cycles a lot slower. Rio7
Bet that would get your attention!
Knew a guy out in west Texas who was a pilot, and mounted semi auto Remington 6mm rifles on his wings, and hunted coyotes with it. He had rigged an old set of Ford pickup electric door locks to trigger them. Had a sight on the fuselage and had them sighted pretty close at 100 yards.
Ammo was cheaper then.
