My view is that he knew he would be arrested even though he was apparently legal in every way.
He was illustrating the fact that gun control would be enforced illegally
He was arrested because breaking the law by cops is easier than catching hell for letting him go free
Know what Bert? he just may be proving a point as you say. A shovel, or even a 100 shovels cannot dig any holes by themselves. The ground is totally safe until a human actually uses a shovel.
re: “He was illustrating the fact that gun control would be enforced illegally”
Litmus test; he wanted to see how “jumpy” the public would be.
And, of course, they were, what with the El Paso Wal-Mart shooting was fresh on everyone’s mind ...