No, Joes, in MO a tent, a rented hotel room, your camper even your auto are considered “dewllings” and thusly are “castles”.
One must insure they are (reasonably) being threatened with lethal force before engaging.
The MO castle doctrine provides for the use of (lethal) force against someone who is uninivited, or if being uninvited after the fact, refuses to leave a place where you the householder has every right to order such person to depart.... No torrent of blood in the living room as the anti’s predicted. Very few incidences of the latter type situation, several of the former, of course.
mo.gov-then statutes will get you to the actual secition if interested.
Here in Columbia, MO, two thugs broke down the door of an apartment
in the middle of the night. This was soon after the Castle doctrine
was made law.
The renter blew both of them away. And was cleared by the local police.
Happy Ending!