I am not a legal Kansas resident
What if you want to buy/sell a firearm face to face with another Kansas resident or buy a firearm other than a rifle/shotgun from a Kansas FFL? What if you wanted to get the cheaper resident hunting/fishing license? Would you be a Kansas resident then because that would only be legal to do if you were a resident of Kansas. Personally, I don't see why some military members have such an issue with just saying "I am a resident of whatever state I have orders to, and if I sleep somewhere different at night, I am also a resident there." It's like admitting to a crime to some people.
I had just the opposite issue. I walked into the WA Department of Licensing, put my military ID card and orders on the counter and said, "I would like a Washington State ID card please." The counter guy asked if I had a driver's license from another state, and I said, "Yes, Wyoming." He said, "You have to get a WA Driver's License then." I said, "No, state law says I am not required to get a WA state driver's license, and state law also says that persons who do not require a driver's license may obtain a state ID card. So that is what I want." He said, "Youe Wyoming driver's license will become invalid when you get a WA ID Card." I rolled my eyes and said, "That isn't any concern of yours, regardless of what you think will happen to my Wyoming driver's license, there is nothing keeping you from issuing me a WA State ID Card." He said, "It's up to you...".
So, after I got my Washington ID Card, I emailed the Department of Licensing HQ in Olympia and they replied that I was exactly correct. I was a WA resident due to being ordered to WA and living in WA, that I was not required to obtain a WA driver's license because state law exempted me from having to get one, that I was entitled to a WA state ID card, and obtaining the WA State ID Card would in no way invalidate my Wyoming driver's license, and that they would inform the local DOL office of the correct answers.