Think of it like this:
This is a 1967 Ford Country Squire
But most people call them "Grocery go-getters"
No company makes a "Grocery go-getter" vehicle. They make station wagons, SUVs, Sedans, etc, but no "Grocery Go-Getter"
Same thing applies to this situation...just because people call it an "assault rifle" doesn't make it so. There is absolutely ZERO DIFFERENCE between these two rifles other than aesthetics
They are both Semi-Automatic. They both fire .223. They function 100% the exact same way. Yet one looks 'cool' and the other looks like a hunting rifle.
So one is labeled an "assault rifle" by people and one is not even though this is literally no difference, function wise, between the two what so ever.