 AK-47 in general is a 7.62 weapon. It's a bigger round. Sorry, I shouldn't talk like this for people who don't know guns. It's a bigger round. It's a fatter round. It's a larger diameter round. An AR-15 is less. It shoots a 5.56. A smaller round. Sorry, I have to be careful with a smaller round. An AR-15 is lighter. An AR-15 is more accurate. And if I'm being honest, it's a superior weapon.