OP is right, the direct impingement of the AR-15 never really caught on. Whereas the AR-18 short stroke system has been widely copied and used in numerous other firearm designs.

>>64164795
I can't actually think of an instance where AR-15 system was ever adopted and used in other guns. The only guns that use the AR-15 DI system are...exact AR-15 clones.

You just proved OP's point.

So let me get this straight.

Kyle Rittenhouse went to a protest and shot 3 people with a fucking AR-15 and /pol/ is cheering.

Karmelo Anthony defended himself with a knife and conservatives are practically calling for him to be lynched.

Admit it, you only hate him for the color of his skin.