Hell yeah

This card looks bland on the tin but it does so much work on a gun focused deck, it is basically saving you actions, resources and potentially even XP, cause all your guns will stick for a longer time in play before you need a replacement and you may not even need cards that replenish your guns ammo. Also, it is very good with certain weapons that have super powerful singular shots, especially the ones with low ammo count inherently, like Shotgun (Sawed Off and not), Lightning Gun, Flamethrower and the Chicago Typewriter. Another gun that gets a surprisingly big boost from this is the .18 Deringer, that card is low costed and guarantees value for your investment as missing shots gives you back the ammo you used, having an extra ammo on those means an extra "guaranteed" hit, the LV 2 .18 Deringer becomes a 2 cost 4 ammo weapon wich is great value.

At 3XP it is costly but it’s worth it and being a permanent it will always be online. This card biggest weakness is that its impact diminishes with guns that have lots of ammo inherently specially the BAR and the Gatling Gun, as one extra ammo for those would only give you +1 damage.