Yes, man had the legal right to do it. However, why does the state allow that right?
The NRA's Open Carry Flip-Flop Was Weak
AK-47 and its extended family Quiz, Equipment & Weaponry
Man with AR-15-style rifle near bus stop claims he wasn't trying to terrify kids - The Washington Post
States eye allowing concealed carry of guns without a permit
Should an AK-47 be legal? Listen for yourself
Using an AK-47 for Self-Defense
Supreme Court appears torn over challenge to gun 'bump stocks
How the AK-47 and AR-15 Evolved Into Rifles of Choice for Mass Shootings - The New York Times
Gun Facts Insight on Concealed Carry of Guns in Public
AKM-47 V4 Assault Rifle - Gel Blaster – Gel Ball Undercover
What Do I Need to Buy a Gun Do I Need a Background Check to Buy a Gun
Why is this man carrying an AK-47 outside of GOP convention? 'Because I can.
The AK-47: Everything You Want to Know