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The Viper 5 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 Viper 5:
    • 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.

Upgrades

Lost Alpha

Developer's Cut

List of upgrades
ID Icon Upgrade Description
Cost Effect Requirements
1A Ui inGame2 upgrade Gadyuka 5 1.png Additional return spring Installing additional springs with a reverse spiral can reduce the recoil without affecting bullet trajectory.
500 RU

Recoil -15%


1C Ui inGame2 upgrade Gadyuka 5 2.png Balancing parts Polymer parts which rigidly fix spring trajectory, reducing the sway.
800 RU

Accuracy +20%

1A

1D Ui inGame2 upgrade Gadyuka 5 3.png Titanium spring return mechanism Titanium springs are much more efficient than steel ones.
800 RU

Rate of fire +10%

1A

1E Ui inGame2 upgrade Gadyuka 5 6.png Return mechanism protective coating A protective coating increases the reliability, and most importantly, further isolates the receiver from the environment.
1100 RU

Reliability +25%

2A Ui inGame2 upgrade Gadyuka 5 5.png Accelerated refire rate Despite its name, it replaces the regular bolt with an exposed bolt system: it should provide a higher rate of fire.
500 RU

Rate of fire +10%


2C Ui inGame2 upgrade Gadyuka 5 6.png Longitudinal grooves Adding oblique grooves to the frame of the weapon helps reduce friction of moving parts and protects them from dirt, increasing weapon reliability.
800 RU

Reliability +20%

2A

2E Ui inGame2 upgrade Gadyuka 5 7.png Semi free roller locking system A roller locking system increases accuracy.
1100 RU

Accuracy +30%

2F Ui inGame2 upgrade Gadyuka 5 8.png Incident slide This slide slides along the stem, preventing the muzzle from climbing when firing.
1100 RU

Recoil -30%

3A Ui inGame2 upgrade Gadyuka 5 9.png Slide vibration compensator Adding this part can partially offset recoil, increasing accuracy when firing full auto.
500 RU

Recoil -15%


3C Ui inGame2 upgrade Gadyuka 5 10.png Springless descent An automatically retracted spring helps you take the first shot faster.
800 RU

Handling +20%

3A

3D Ui inGame2 upgrade Gadyuka 5 11.png Composite trigger group Individually selecting composite parts for each weapon model is tedious and expensive, but the weapon's lifespan increases noticeably.
800 RU

Reliability +20%

3A

3E Ui inGame2 upgrade Gadyuka 5 12.png Axle-free trigger group Axle-free trigger helps to increase machinery automation rate, resulting in a markedly increased rate of fire.
1100 RU

Rate of fire +20%

4A Ui inGame2 upgrade Gadyuka 5 13.png Super alloy receiver A receiver made from super alloys allows the weapon to withstand daily combat stress without compromising reliability.
500 RU

Reliability +15%


4C Ui inGame2 upgrade Gadyuka 5 14.png Additional cooling jacket Installation of this shroud can increase the weapon's rate of fire overheating the barrel.
800 RU

Rate of fire +10%

4A

4E Ui inGame2 upgrade Gadyuka 5 15.png Hollow grip with stabilizer A stabilizer is installed inside the hollow grip, reducing recoil.
1100 RU

Handling +30%

4F Ui inGame2 upgrade Gadyuka 5 16.png Smoothing spray application The spray smooths out minor flaws in weapon mechanics, significantly increasing muzzle velocity.
1100 RU

Bullet velocity +30%

5A Ui inGame2 upgrade Gadyuka 5 17.png Expanded magazine Change standard magazines for larger ones.
1000 RU

Mag. size +10


5C Ui inGame2 upgrade Gadyuka 5 18.png Conversion to 9x18 mm The calibre of the weapon can be changed by modifying its internal mechanics.
1500 RU

Change calibre to "9x18"


5E Ui inGame2 upgrade Gadyuka 5 5.png Three round burst mode Installing an additional trigger module allows to fire short controlled bursts.
800 RU

3 round burst mode


Notes

  • It can be modified to use 9x18mm ammo, which would make it easier to have a large and cheaper supply of ammunition.
  • Weapon does not need to be upgraded in order to attach a silencer.
  • The v1.4007 PRM Weapons Pack changes the recoil to 34 (9 Single).

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).

Gallery

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