Is there some way to make armor piercing ammo out of ordinary ammo? I checked a reloadingbench, but didnt find 5.56 ap ammo..

No you can't make Armor Piercing or Hollow Point ammo from the reloading bench. Its not the kind of ammo people handload at home.

To bad. That would have been usefull.

Handloaded rounds to the dome work amazingly well. Just saying. I love the handloaded rounds. I Re-use every case I can.