We don't. We need M-16s, but the Feds are violating the Constitution and it's outrageously hard to get them. So we "settle" for AR-15s.
Which is somewhat of a misnomer ... originally the ARmailte-10 and the ARmalite-15 were both select fire ... Dad carried a CAR-15 for a time in SE Asia. I asked. Yes, he recalled it having a 3-position happy switch.
We need a total ban on the public paying multi millions for protecting public servants who want the public defenseless.
PROTECT AND CLOSE OUR SOUTHERN BORDER BY FORCE NOW.