I personally do not think that set up is legal in the Kommunist Republik unless you have a CCW.
I will relate an incident a couple months ago.
Going though some Redwood forests on the 101. Passed a couple of bikers while pulling a trailer. One bike was definitely having an issue going up a hill. And they did not take kindly to me passing them.
For 20 miles , they would come up on my tail and not pass me. High alert for me. I reached around and pulled my 9 case out. Locked and loaded it.
Those bikers followed me for 50+ miles. I know I was not legal being locked and loaded. But I was going to protect myself. They passed me in Ukiah then I passed them pulling over in Hopland .
I don’t care what the laws are, I will protect myself. Maybe they thought better of messing with a redneck driving a 2500. They finally passed me in Santa Rosa.