Viper 5

The  is a submachine gun that appears in S.T.A.L.K.E.R.: Lost Alpha and S.T.A.L.K.E.R.: Shadow of Chernobyl.

"One of the best weapons in the sub-machine gun class. During the last decades of the 20th century, it was adopted by the army and the police special forces units in many countries. When it was gradually replaced with more up-to-date models, it appeared on the black market and then the Zone."

- Inventory description

Overview

 * Reliable choice for rookies.
 * Cheap to buy and maintain however upgraded ammo will be rather scarce at the start of the game.
 * Can be equipped with a silencer.
 * There are two unique variants of the :
 * the Viper 5 9x18 with caliber 9x18mm and extended durability (-v1.4002) resp. increased bullet speed (1.4005+)
 * the Noiseless Viper with a non-replaceable muffler, extended durability and increased accuracy.

Trivia

 * In Lost Alpha, the weapon's icon, with the wide magazine, seems more reminiscent of a carbine such as the HK53, rather than a pistol-calibre submachine gun.
 * In the gamefiles the Viper 5 is often referred to as Gadyuka, the ukrainian translation of Viper (гадюка).