And the coup de grace:
An AR 15 semi auto bolt carrier group does not have that lug. In fact, it’s cut off. This results in a lighter weight BCG and that’s the primary advantage of semi-auto BCGs. At least it was way back before every company out there produced lightweight full auto rated BCGs.
@Blackvegetable
What have you learned? You learned that a full auto BCG does not make an AR 15 full auto,
And you learned that the original AR 15 had a different BCG than the Stoner Design.
I told you that years ago but you didn’t listen. Now you are just embarrassing yourself.