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Trader TrenchGun.png
Pricing: £1250 (£937)
Weight: 8 blocks
Ammo: 6 Hud Single Bullet.png 48 (54)
Ammo cost: £20 – £120
Related achievements
Trench Warfare.jpg Trench Warfare
Fiery Personality.jpg Fiery Personality

The trenchgun is a weapon for the Firebug class. It is a shotgun loaded with special Dragon's Breath shells, allowing its projectiles to light targets on fire. This makes it far more usable at medium range than support shotguns, because even though it will not cause as much basic hit damage, it can light whole groups of enemies on fire at range more efficiently than almost any other firebug weapon with the exception of the husk launcher.

It also retains the shotgun's basic high damage potential at close range. The low cost and strategic possibilities make this weapon extremely useful to Firebugs, especially when playing alone or with a smaller group.

Unlike the MAC-10, the trenchgun keeps its incendiary ammunition even when used off-perk.

At eight blocks, a Firebug cannot carry a Husk launcher or flamethrower with this, though the Mac-10 and Flare Revolver, which can be carried, complement it well.


The Firebug perk gives discounts and bonuses to the trenchgun. While damage is not boosted, the support specialist perk still gets increased shot penetration.


Any perk
Pellet damage Burn damage over 10 secs
27 x 14 515-600

Each shell's impact damage is not affected by the Firebug perk. Dragonbreath trench cartridges fire 14 pellets doing 27 damage each totaling to 378 damage per shot with 1.5x headshot multiplier. Base damage of each pellet is 18 but all specimen have weakness against direct hit incendiary projectiles for 50%. Its shells inflict moderate damage and set specimens on fire, dealing additional damage over time. The trenchgun is one of the Firebug's most effective weapons against Husks, Sirens and Scrakes because of its fast reload speed and potential for relatively large damage spikes compared to the flamethrower and MAC-10. Just like MAC-10, afterburn effects of Trenchgun doesn't scale with firebug level but it grants a faster handling at both reload and fire rate per perk level.

Trenchgun is a cartridge shotgun with 6 shots loaded at once in its tube with standard 50% pierce efficiency shared with other cartridge loaded shotguns. Pierce efficiency can be improved by Support perk, reducing the damage loss down to 4% per target pierced but damage is unaffected. Reloading it will be 5% slower compared to standard Shotgun with 0.7 second per shell loaded at its base which can be improved by Firebug perk. The Firebug perk also receives bonus for loading up Trenchgun up to 60% with level 6, reducing the reload time for single shell down to 0.437 second, which is slightly shorter than half second. Besides Firebug, the Commando perk can slide shells faster, reducing the reload time 0.52 second.

Price and Ammunition[edit]

Level  Discount Price Sale value
Base 0% £1250 £937
0 10% £1125 £843
1 20% £1000 £749
2 30% £875 £655
3 40% £750 £562
4 50% £625 £468
5 60% £500 £374
6 70% £375 £280

Base cost of Trenchgun is £1250 and gets 10% discount per perk level to reduce the cost down to £375. Initially bought it comes with 6 shots loaded and 18 shells on spare to maximize at 48 shots. Firebug perk again grants 10% bonus per level for maximum ammo carried, and increases the maximum ammo pool of Trenchgun to 62 shells at level 6 Firebug. Each six shot worth of shells cost £20 which makes each shell cost about a little over three pounds a piece. Full refill of the weapon costs £160 off perk and at maximum level a complete refill will cost £206.


  • If the first shell does not kill the specimen, it's safer to back up and either fire once the trenchgun has been cocked again or just wait for the specimen to burn to death.
  • Using the 9mm tactical pistol is stronger and far more accurate for targets at long and even medium range, when aiming for the head.
  • The trenchgun is still ineffective against the Fleshpound and Scrake on higher difficulty levels, so it is generally wise to let your team initiate the attack on these specimens before enraging them. However, on normal difficulty, a Scrake can be killed using one magazine of the trenchgun, with the appropriate number of players and Firebug level.
  • Reloading the trenchgun whenever you have the time is important, since the reload time to completely fill it is fairly long. On later waves, you won't have much time to reload between attacking specimens, so timing your reloads with your teammates is essential.
  • Firing at a large group of specimens from a moderate distance is a good way to soften up or kill many of them before they close in. Although the pellets may not do much damage at that range, the afterburn will kill them or damage them before they get to you.
  • Especially on higher difficulty levels, waiting for enemies to close in and bunch up is a much more efficient use of ammo than picking them off one by one. With practice, you should be able to judge the risk and reward of this technique appropriately.
  • The trenchgun is an extremely effective crowd-controller, (On Hard Difficulty) you will rarely require more than 2 shots to kill anything less than the Husk, Scrake, Fleshpound and Patriarch. As mentioned before, be wise on ammo usage. The trenchgun has an arguably tight spread, allowing you to go mid-range with the shotgun fairly well.
  • An effective strategy on Hard difficulty and below is to go for a load-out of a trenchgun, .44 Magnum and an M79, in that particular order. Using the trenchgun as a 'primary weapon', the .44 as a weapon dedicated to head shots only, and the M79 coupled with a fire-grenade for emergency or a large area of crowd-control.

Advantages & Disadvantages[edit]



  • Does the same damage, regardless of level
  • Inaccurate, especially at longer ranges;
  • Ineffective against big specimen such as Scrakes, Fleshpounds and the Patriarch;
  • Pump-action limits rate of fire;
  • Low magazine capacity of only 6;
  • Moderately heavy at 8 blocks;
  • Cannot penetrate specimens if wielded by a Firebug.
  • Can only give experience to the Firebug perk.

Bugs and exploits[edit]

  • The HUD shows the flashlight-charge indicator when the Trench Gun is equipped, even though the weapon does not have an attached light. As such, pressing the quick-flashlight button does nothing while the Trench Gun is in the player's hands. This was fixed with the patch from 8th November 2012.
  • If you buy the gun on perk and then swap to a Support Specialist, the gun retains its increased maximum ammo capacity (Untested for other classes). While you cannot buy ammo past 48 shells you can pick up excess from ammo crates.


It is a Winchester Model 1897, a shotgun that gained popularity during World War I, loaded with pyrotechnic rounds.

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