Thread on pin removal
https://www.theakforum.net/threads/best-way-to-remove-pins-from-sight-and-gas-block.140284/
Another thread worth a look
https://www.theakforum.net/threads/barrel-press-on-the-cheap.311635/page-2
https://robertforbus.com/ak-barrel-assembly-tools/akm-ak74/