AR15: You can pick off prairie dogs at 300 meters all day long
AK47: You can pick off a deer pretty easy at 300 meters
Mosin-Nagant: You get out of your truck, see an elk on top of a hill, and realize you really can use iron sights that far.
AR15: You measure your misses by sub MOA measurements
AK47: You miss and, and aim a bit lower this time.
Mosin-Nagant: Even if you miss the shockwave of the bullet will kill the animal.
AR15: You are careful to keep in clean in the field.
AK47: You don’t worry so much about some dirt getting in it.
Mosin-Nagant: It still has gritty grease inside it from when the Finnish army put it into storage.
AR15: Your bayonet will do an alright job of butchering your kill if needed.
AK47: The bayonet doubles as a decent hunting knife.
Mosin-Nagant: Your bayonet can be used to spit roast an entire pig.
AR15: Nice and light for carrying over obstructions.
AK47: Handy package for carrying over obstructions.
Mosin-Nagant: You can pole vault over obstructions.
AR15: Can’t run dry or you get seizure.
AK47: Can run dry, but may cause laquered ammo to stick in chamber.
Mosin-Nagant: Just handling the bolt gives it enough oil to operate smoothly.
Too many more to copy/paste at
https://www.everydaynodaysoff.com/2011/10/10/ar-15-v-s-ak-47-v-s-mosin-nagant/