Icon disambig
For an overview of submachine gun models in the Fallout series of games, see Submachine gun.
Yeah, it is nice. I don't even sleep without it under my pillow. My father made gun ammunition for a living. Taught me everything about how firearms work. So, I've spent my downtime tinkering with guns like my 10mm Ultra SMG here. It's like a hobby I guess.Sydney

Sydney's 10mm "Ultra" SMG is a unique small gun in Fallout 3.


Sydney's 10mm "Ultra" SMG does 2 extra points of damage per shot and holds 20 more rounds of ammunition in the magazine when compared against the base 10mm SMG, which also allows it to do substantially more damage per second when reloading times are considered.


Sydney's 10mm "Ultra" SMG can fire a total of about 926 rounds, the equivalent of 19 reloads, from full condition before breaking.


  • 10mm SMG - The standard version found throughout the Fallout 3 game world.
  • Sim version Gametitle-FO3 OA - A sim-only version of the weapon which differs only in health, with a whopping 999,250 hit points, essentially preventing the gun from ever degrading. The weapon is not accessible outside of the simulation without the use of the Gary 23 exploit or console commands.
Icon cut contentThe following is based on Fallout 3 cut content and has not been confirmed by canon sources.
  • 10mm Alloy Steel Submachinegun - Another version of the weapon was cut from the Operation: Anchorage DLC. Called the 10mm Alloy Steel Submachinegun, it is otherwise identical to the standard 10mm SMG.
Icon cut contentEnd of information based on Fallout 3 cut content.


Icon melee- Weapon name (melee or unarmed)Icon sequence- Attacks in V.A.T.S.
Icon gun- Weapon name (gun, energy or explosive)Icon action- Action point cost
Icon damage- Damage per attack (damage per projectile)Icon dap- Damage per action point
Icon dps- Damage per secondIcon spread- Weapon spread
Icon explosion- Area of effect damageAssault carbine extended magazines- Magazine capacity (shots per reload)
Icon effect- Effect damage & durationIcon repair- Durability (number of attacks before breaking)
Icon bonus effect- Bonus effectsIcon weight- Weight
Icon attack- Attacks per secondIcon merchant- Value in caps
Icon chance- Critical chance % multiplierIcon ratio- Value to weight ratio
Icon critical damage- Critical damageIcon ability- Skill required
Icon crit effect- Critical effect damage & durationIcon fist- Strength required
Icon plus- With all mods attached
Icon gunIcon damageIcon dpsIcon attackIcon chanceIcon critical damageIcon sequenceIcon actionIcon dapIcon spreadAssault carbine extended magazinesIcon repairIcon weightIcon merchantIcon ratio
10mm submachine gun 7
Sydney's 10mm "Ultra" SMG 9


Sydney the relic hunter carries this weapon. It can be obtained by either killing her, letting her die during the quest Stealing Independence, or finishing this quest and afterwards giving her "A note from Little Moonbeam's father".


Sydney has two versions of this weapon. According to the GECK, she carries a non-playable version, and a playable version is spawned on her person when she is killed, as a "death item". As a companion, she will use up ammunition for any non-companion weapon, so the non-playable version exists to prevent this. Thus, if she dies and you take her weapon, you may notice that she appears to still be holding it in her hand.


  • PCIcon pc Playstation 3Icon ps3 Xbox 360Icon xbox360 It can be obtained an infinite number of times from Sydney if you go through the necessary dialogue choices and then give her the note from her father. After you complete the quest by returning to Abraham Washington, select the "So, whatever happened to your father?" dialogue option, then give her the note and she will give you her Sydney's 10mm "Ultra" SMG and 50 10mm bullets. Continue talking to her and you will notice the previous question about what happened to her father is gone. Select "Since we're done now, why don't you tell me about yourself?", then "Nice gun, I've never seen one like that before", followed by "That's all for now, I guess", then repeat "So whatever happened to your father?" and finally "Sydney, I found a note from your father, he didn't abandon you." This can be repeated an infinite number of times. [verified]
    • This was fixed as of patch 1.7 for PC only.
  • Playstation 3Icon ps3 Xbox 360Icon xbox360 Sydney's 10mm SMG will sometimes flip upside down when she has it hanging on her hip, or when she draws it to walk around the National Archives. This continues to happen even in the Game of the Year version of the game. [verified]


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