It depends on the state. Some if the weapon flashes for a second or two it does not break the law. These dumb asses reporting law abiding citizens are the problem. If some one rolls up with an AR or a weapon already out then its time to do something.
You’d better take a second look if you’re in Michigan. Lots of folks walking around with pistols on their belts and thighs. Some even carry loaded rifles and shotguns on their backs. Open carry right into a grocery store if they needed to. Doesn’t happen everywhere, but it does happen where I live. Identify Target and intent...