AK Operators Union, Local 47-74 guides you through an AK47’s internal parts and how to maintain them.
https://www.youtube.com/watch?v=HDHhUDXuwK8&t=3s
Go and subscribe to AK Operators Union, Local 47-74 here @ https://www.youtube.com/channel/UC0-nZ9dKQroaCr2MuAXeqyg