Ahhhhhhh! An armory! Even on infection maps, armories are frowned upon. An armory basically shows that either 1) You were too lazy to place weapons or 2) You are bad at placing weapons. Armories, even in this case (2 min respawn time for ammo) are horrible for gameplay, as good players will be able to stay there until the ammo comes back. That being said, I think this map is an example of good forging, and looks fun to play with people who do not take advantage of the armory. I would, however, add more buildings so that the zombies have a better chance to actually get to the basses. EDIT: If you decide to keep the armory, move the shotguns so that multiple people can have the same chance to get ammo for them.