The UZI is an automatic weapon in the boxhead game. It is also the second weapon that you get. In the first three games you can get an upgrade which enables unlinited ammo. It has the highest amount of ammo even without upgrades, and has an availible upgrade to infinite range, making it the longest-ranged weapon, and an optional sniping weapon (Although there are no other weapons that can be used as snipers). One of the few weapons that start out fully automatic.