Ability to change weapons while in combat

Is it possible to make stored weapon be used in combat?

For example i have a crowbar on my hand and want to switch with a bow strapped on my back.

Maybe add a new combat move for it? And the turns consumed depends on the accessibility of the weapon (If it is just strapped on the back or stored in your bag/vehicle).

Because it is just weird for me to retreat just to change my weapon which is just strapped on my back.