It appears that Ukrainian light aircraft crews are training to shoot down Russian recce drones. Not sure what the drone in the video is, source says a mocked up Orlan. The rifle is a Malyuk.

More on Malyuk's here:
https://armourersbench.com/2022/04/10/vulcan-malyuk-ukraines-bullpup/
#Ukraine #UkraineWar #drones #bullpup

Original tweet: https://twitter.com/historicfirearm/status/1810050902809575755