"Would you support the military and police also being disarmed?" - Nope.
"A small fraction of the firearms used to kill children" - it's a small fraction because of the massive numbers of gun related deaths (all types) in the US, not because it's a small number.
"small arms are overwhelmingly the weapon of choose for "mass shooters". " - Yup. Background checks, red flag laws, stop straw purchases, registration of private sales. No need to take the guns away but make every gun used in a crime traceable back to its owner.
"hyper focused on AR pattern rifles" They are designed to kill people. They have no other function in a civilised society.