As you continue to claim to be the teacher, Askholio, you are aware that not all 223 semi auto sports rifles are designed to shoot 5.56? Remember, coward asshole, you are the self described expert.
https://www.danielpeart.net/pdf/Olympic ... 202010.pdf
Page 3, self described expert. Just another case showing a different design, ******. Bring it on ****. You don't know ****, Askholio.