A couple of Ukrainian blokes in an ancient Yak-52 shooting down Russian drones. The aircraft itself doesn’t have any guns, the bloke in the back just shoots at them with an assault rifle with the canopy fully open.

https://www.reddit.com/r/Planes/comments/1so8dg6/ukrainian_aviation_brigade_kherson_brings_down/

An example of a Yak-52. Less ancient than I thought, they’re only about 50 years old.