Yes, man had the legal right to do it. However, why does the state allow that right?
How much would a semi-automatic AK-47 cost in the US? - Quora
Man with AR-15-style rifle near bus stop claims he wasn't trying to terrify kids - The Washington Post
NRA calls 'open carry' rallies 'downright weird
MRSC - Possession and Carrying of Firearms in Washington State: What's Allowed?
Updates: Wagner leader Yevgeny Prigozhin believed dead after jet crash, Russia-Ukraine war News
Texas gun laws: Here's everything you need to know after El Paso shooting
AK-47-type guns turn up more often in U.S.
The Gun: Africa and the AK
Spec Ops Doctor: Rather Shot With AK-47 over M16 -The Firearm Blog