Rockwell designed the 5mm CZ57 Avenger as the replacement for their aging CZ53 personal minigun. The Avenger's design improvements include improved gel-fin cooling and chromium plated barrel-bores, giving it a greater range and lethality. It also has an ammo capacity of 120x 5mm round like the earlier versions of the CZ53 model. Later models of CZ57 have a high-speed motor, a cage underneath to put the ammo box and used in combination with a backpack.
The CZ57 Avenger minigun is a unique version of the regular minigun. In comparison it deals slightly more damage per shot than the regular counterpart. This is further augmented by a vastly greater rate of fire, giving it the highest damage-per-second of any weapon in Fallout: New Vegas. Additionally, the weapons spread is reduced to just over half of that of the normal minigun, giving it better accuracy over longer distances. However, the standard minigun holds twice as much ammunition in a belt than the CZ57 Avenger, giving the CZ57 Avenger only 4 seconds of continuous fire before needing to reload, but this does reduce the overall weight of the weapon from 25 pounds to 18 pounds. The name and model of the Avenger is also printed on the side of the ammunition pack.
ps3xbox360 Picking up the weapon or having it in your inventory can cause the game to hang on a black screen and subsequently freeze the system. [verified]
xbox360pcps3 It's possible that the Avenger or the prospector may not spawn correctly and not be in the truck at all. Before giving up because of this, be sure to check companion's inventories. [verified]
pcxbox360ps3 There is a series of sound queuing issues with this weapon, from sounding out of sync with the animation to no sound at all. [verified]
xbox360 After the 1.3 update, accessing the dead prospector's inventory (or either of the metal boxes nearby) may freeze the console. [verified]
pc Rounds fired from the CZ57 do not count for the "Click" challenge. [verified]
xbox360ps3 Occasionally once you run out of ammunition you will not reload. This can be fixed by switching to a different weapon and back to the CZ57. [verified]
xbox360ps3 Like most big weapons in the game, if given to a companion and uses it, it might result in getting it shot off their hands dropping it and losing it. [verified]
xbox360ps3 - Occasionally, the Avenger will not initiate spin-up sound and immediately start losing ammo before actually shooting. This can cause a large ammo problem. [verified]
Sometimes if put in a companions inventory the CZ57 Avenger will be removed from the game entirely. [platforms tag needed][verification needed]