A conversion from the SNES game Feda
https://www.spriters-resource.com/snes/fedatheemblemofjustice/
Recognize the feet? No? Well, in Feda the feet were cut off...so i used the feet from the Armed skeleton.
IDLE
ATTACK
IDLE
ATTACK
Machine Gun
I'd recommend for animation 36 (default for the Armed Skeleton machine gun) and set the Y at 18, this will have the effect line up with the gun he holds.