Zuzana 2 155 mm Self-propelled Gun Howitzer is a Slovak artillery system with a 45-caliber gun and automatic loader for loading of both projectile and charge. It is an evolution of the 152mm SpGH DANA self-propelled howitzer. Initially known as Zuzana A1 and then Zuzana XA-1, this is the latest development of the Zuzana. It was unveiled for the first time in 2004. This model is fitted with a 155/52 ordnance and has other improvements such as a reworked turret and a different engine: the Tatra T3B-928.70 of 330 kW. Updated version with a new 52-calibre gun, full 360-degree turret traverse, a new armored cab and further reduced crew of 3 enabled by automation. It has passed Slovak Army trials in December 2009. The new version is claimed to possess Multiple Rounds Simultaneous Impact (MRSI) capability.
The system features long range, high accuracy and rate of fire, prompt preparation for firing and high level of mobility ensured by a modified TATRA 8×8 chassis. Design of the gun enables to use any NATO standard 155mm ammunition available on the market. The Fire Control System enables for a Multiple Round Simultaneous Impact (MRSI) mode. One of the unique features of ZUZANA 2 is that the gun is mounted externally in between two totally separated compartments of the turret. This makes the crew inherently safe from any potentially dangerous mechanics of the gun and autoloader plus the crew is protected from the gases generated during firing.