As far as guns go, most liberals do not know the difference between an AR15 and a Browning BAR or Remington 7400. The latter two are hunting rifles in semi auto. The 223 or 5.56 used in most ARs is more anemic than what most would use for hunting medium game like deer. A 3006, 308 is very common and would do 10x the damage of a 223. And the guns work the same way the AR does. Gas operated self loading. This is why the 1994 crime bill failed.
When hunting humans the 5.56 round has been deemed the most appropriate, by most militaries world wide.
Although not the biggest, it’s still a lethal round and its real value is in being able to carry more ammunition by weight, which is in theory more kills.