Counter Strike Online Wiki

Thunderbolt is a science fiction sniper rifle that is obtained from the Code Box.


Empty slot This weapon has Part System installed.

Thunderbolt is a rail gun that fires rounds accelerated by the electromagnetic effect. With its destructive power, it can penetrate and kill any obstacles and enemies in one shot. Thunderbolt is fed with 1 round of Battery which must be reloaded after each shot. Its scope emits sound and changes color when an enemy crosses through the scope crosshair.


  • Instant kill on humans
  • Massive damage to zombies, bosses and walls
  • Very accurate even when walking without using the scope
  • Scope emits sound and reticle turns red whenever an enemy is targeted at
  • Short reload time
  • High penetration power
  • Unaffected by Kevlar


  • Long drawing time
  • Very heavy
  • Expensive price and ammunition cost
  • Low reserve ammo
  • Single shot only
  • Cannot share ammo with other weapons


Lightning Rail

Lightning Rail

An entry-level rail gun that fires accelerated electromagnetic rounds. This variant has lower firepower.

Green Leaf

Thunderbolt Green Leaf

Thunderbolt painted with Green Leaf Paint Design. Sold in shop for limited time for 100 days.


Thunderbolt Expert

Upgraded version of Thunderbolt with Weapon Enhancement mechanism for six times. It can only be enhanced using a special enhancement kit that can only be obtained after disassembling a Thunderbolt.



A variant with better damage output and can only be obtained from 2023 Season 17.

Tips And Tactics[]

Armor Yes No
Head 551 552
Chest & Arm 137 138
Gut 172 172
Leg 103 103
  • This weapon deals the highest damage compared to other sniper rifles.
  • The weight is the same as USAS-12.
  • The ammo cost is the same as Cannon.
  • The firing sound is as quiet as Steyr Scout. However, the light trail signals the user's presence.
Zombie Infection
  • Thunderbolt can deal 4460 damage for zombies if shooting in head, note that attack power has been maxed (230%).
  • Lightning Rail only deals 2138 damage for zombies if shooting in head, with the same condition.
Zombie Scenario
  • Thunderbolt deals tremendous damage to bosses in Zombie Scenario. With max power, it can deal about 12,000 ~ 22,000 damage per shot. If the user is facing against Frozen Terror, it will deal an insane amount of damage, reaching up to 50,000. 
  • 20 rounds of Thunderbolt can deal 260,000 ~ 420,000 damage to bosses (except Revenant: ± 160,000 damage), provided that the firepower has been maxed.
  • Lightning Rail with max power, can deal around 6,000 ~ 9,000 damage per shot to bosses. 
  • Since the Zombie Scenario re:boot, this weapon deals from average to very high damage depending of the obstacle and map in specific, a shot could deal about 500 ~ 1,500 damage to an obstacle.

Release date[]

  • South Korea: 22 November 2012
  • China: 5 December 2012
  • Taiwan/Hong Kong: 6 December 2012
Lightning Rail
  • South Korea: 26 February 2015
  • Taiwan/Hong Kong: 10 March 2015
  • China: 11 March 2015


Draw sound

Idle sound

Fire and reload sounds

Zoom sound

Lock on sound


  • This is the first weapon in Counter-Strike Online to feature lock-on target function.
  • Other players can also hear the lock-on sound.
  • A blue trail can be seen when a user shot the Thunderbolt. For Lightning Rail, a yellow trail can be seen.
  • This is the first sniper rifle that can do instant kill even on the legs.
  • The word "RG2" can be found on the buttstock. It is possible acronym for Rail Gun 2.
    • The word "MG" can be seen on Lightning Rail.
  • The scope emits neither sounds nor color changes when it is aimed at NPCs.
  • There was a weird circled "B" sprite can be seen when the weapon is shot to a wall in the Singapore/Malaysia version. That was caused by a missing sprite file and was fixed in later updates.
    • This also happened in the Taiwan/Hong Kong version but with an arrow instead of the circled "B". This has been fixed too in later updates.
  • The user still reloads the gun even though the weapon has already run out of ammo due to the fact that its reload animation shares the same sequence as the weapon's shoot animation.
  • This is one of the few weapons that does not play a reload animation in third person view.
  • Oddly, though Lightning Rail is using EOTech sights, it can zoom twice and has Thunderbolt's crosshair.
  • After fully enhanced, the magazine size increases to 35.

External links[]