I think you misunderstand- the B-36A had no live weapons at all. It was only used for conversion training. The B-36B is the functionally the actual first variant. Which I will once again nudge people to go support the excellent suggestion for because it has a wholehearted +1 from me!
Sorry, I am aware that the A was a training variant, by multiple variants I was refering to the addition of the B-36H, which had its full armament but upgraded sensors, the four jet engines amongst a host of improvements. The other variant they could potentially add though I personally don’t like as much is the J variant which had its armament stripped apart from the tail gun, sorry for the confusion