You just struck thru your answer. You got your answer and rebuttal all in one. Try again.
No full auto or no burst and you do not have a assault weapon designed for the battlefield.
The difference between the two BCGs is the presence of a full auto lug. The bottom portion of the (m16) BCG has a lug that contacts the sear release in a full auto trigger groups and allows the gun to fire in fully automatic. Since a standard AR 15 does not have the trigger components to fire full auto the presence of the full auto lug does not allow a standard AR 15 to fire full auto.
Note the addition. You have your answer and rebuttal to where you are going with this.
https://www.stngrusa.com/whats-the-diff ... d-m16-bcg-
No more excuses.