Sydney's 10mm "Ultra" SMG

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

Characteristics
Sydney's ultra SMG does 2 extra points of damage per shot and holds 20 more rounds of ammunition when compared against the base 10mm SMG, which also allows it to do substantially more damage per second when reloading times are considered. This puts it in the same basic place as the MP9 10mm SMG in Fallout and Fallout 2: exactly as powerful as the normal 10mm pistol compared to the normal SMG.

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

Variants

 * 10mm SMG - The standard version found throughout the Fallout 3 game world.
 * Sim version - 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.


 * 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.

Location
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".

Bugs

 * 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.  There is no fix for this, even on the latest patch.
 * 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 GotY version of the game.
 * If you obtain this weapon using console command "kill" and "resurrect", will make the quest Stealing Independence unable to complete.

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