This is how Practice Firing Range looks like atm, i think it would be a nice feature to be able to access a weapon menu instead of guns laying around. As it is right now not all guns are here for testing which is kinda bleh.
If there were a feature at the Range to change equipment as the one you have for soldiers, IMO, would be great. Either a system where 1 soldier can try every gun or make a system to quick swap classes to try different guns.
Maybe even a system where you can pick Campagin and Faction in a menu to be able to tryout all the guns without having to back out to the menu and switch Campagin and Faction and load back in again.
These are only my suggestions, what i think would be nice to have in the game, you are inclined to your own opinion, but please keep it civil and no troll.