The Weapons Rack is required for the Armory, It will store the weapons for the Armed Guards.
Shotguns, a sniper rifle, baton, body armor and tazers can be seen, and all weapons can be used in the game by guards as of the current state of the game. Tazers can be used by armed guards and guards, while the shotgun can only be used by the armed guard and the sniper rifle can only be used by the sniper. Pistols also exist in game, but cannot be used by guards. However, they can be stolen and used by prisoners during a riot.
This is the only place where Guards who lose their batons in a fight can get a new one.