10 Gauge Shotgun
Weapon Data
First Found on MedSci Deck
Dropped by Shotgun Hybrid (always)
broken, loaded with 1 Slug
Requirements Standard Weapons: 3
Researchable No
Maintenance 2
Modification 1 (1st) / 3 (2nd)
Repairing 3
Ammunition Rifled Slugs
Anti-Personnel Shells
Magazine Size 12
Attack Types Single Shot
Triple Shot
Damage 8 (Single Shot)
16 (Triple Shot)
Summon Code shotgun

The 10 Gauge Shotgun is a usable standard weapon in System Shock 2, and is found early on in the game. It is also used by Shotgun Hybrids.

While it looks like a traditional (albeit incredibly deadly) shotgun, this magazine-loaded behemoth also supports a triple-load shot, which has been known to split its victims in two. A few months after its introduction, its popularity with hunters and other weapons enthusiasts prompted a large-scale purchase of the guns by the UNN military.


The Shotgun requires Standard Weapons skill level 3 to use. No research is required.

Ammunition Types

Rifled Slugs icon Rifled Slugs - The most common type of Shotgun shell in the game that is often carried by Shotgun Hybrids. They deal Standard damage.
Anti-Personnel Shotgun Shells icon Anti-Personnel Shotgun Shells - Rare ammunition that is effective against organic opponents and deals High Explosive damage.

Damage Table

Annelid Half-Annelid Mech Half-Mech Final Boss
Standard x1 x1 x1 x1 x1
Anti-Personnel x2 x4 x0.5 x1 x0.75

Firing Modes

  • Single Shot - It fires a single shot when the trigger is pulled.
  • Triple Shot - It fires three rounds simultaneously and deals double damage.


  • Upgrade 1 - Reduces reload time by 2/3 and increases damage by 10%.
  • Upgrade 2 - Reduces kickback by 2/3 and increases damage to a total of 25%.


  • Unlike the Talon M2A3 .45 Caliber Pistol, which is frequently used as an early weapon in most character builds, the Shotgun should be used only if the player wants to specialize in Standard Weapons.
  • Rifled slugs are one of the most common ammunition types in the game. Shotgun Hybrids have a decent chance of dropping 6 Shotgun Slugs when killed, and will always have 1 Shotgun Slug that can be obtained by unloading their dropped Shotgun. While the Shotgun is not as useful as other weapons, it's unlikely that you will ever be short of ammo for it.
  • When carrying this weapon, loot every Shotgun from every fallen Shotgun Hybrid and unload it. You will have a plentiful stock of Rifled Slugs in no time.
  • The major weakness of this weapon is that it cannot deal extra damage to mechanical enemies and as such you still need the Pistol.
  • When using Rifled Slugs, a Shotgun will fire a single projectile and is suitable in most cases. When using Anti-Personnel Shotgun Shells it will shoot six pellets, reducing its effective range.
  • The alternate fire mode is normally a waste of ammunition, expending three times as much ammo for only double the damage, but can be useful if you need to be certain of taking down an enemy in one shot. Fighting Rumblers at close quarters is one such occasion.


  • The first non-broken Shotgun in the game, which is located next to a corpse upstairs in the flooded storage room across from Watts' quarters on the MedSci Deck, is unbreakable and has reduced kickback. It will still decay, but never jam regardless of its condition.[1]
    • Alas, this seems to be partly fixed in the newest version of the game (2.46). While that Shotgun has reduced kickback (especially noticeable when using the Triple shot setting), unfortunately it does jam after the gun degrades enough. An alternative is to create a file named user.cfg in the main game folder containing only "gun_degrade_rate 0" (without the quotation marks) and re-run the game. The gun will now be unbreakable and also stay at its current condition (4 when found). However, a side effect of this will be no gun in the game breaking or degrading at all. Use that with care.
      • There's an even better, however a bit more difficult option to revert the changes done by the patch. One needs to find the appriopriate .mis.dml file (in this case, medsci2.mis.dml) located in the main System Shock 2 folder and edit it. Lines that are responsible for reverting gun unbreakability are found after a relevant comment (look for word "break" to find it) and need to be either deleted/cut out or preceded by "// " without the quotes, making them only a comment instead of a working command.
        That way all the changes are reverted. Voila, enjoy! :)


  • The model of this weapon is unknown.
  • According to the in-game description, this weapon is developed by the consumer division of TriOptimum.



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