What’s an AR15 but a .223 AR10?
The AR10 was developed as a survival rifle for downed aircrew, to replace their odd over-under combination shotgun/rifle.
The stated purpose of the survival rifle was subsistence until rescue. So the initial design really was intended for game, not for killing people.
Adjusting for inflation, $189.50 in 1963 is equivalent to $1421.83 in 2012 dollars. So an AR is worth roughly the same amount, your money is just worth a lot less. Another thing you can thank your federal government for.