|Overview||Rainbow Six||Rogue Spear||Raven Shield||Black Arrow||Lockdown||Vegas||Vegas 2||Siege|
|"A lot of eyes are on us this time, especially since we have poor intel."|
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- "A mainstay in Rainbow's arsenal, this pistol is the ultimate combat and self defense weapon. Normally the U40 uses the High Capacity Magazine or Suppressor attachments."
— In-game description
The U40 is a weapon featured in Tom Clancy's Rainbow Six: Lockdown.
In the PC version of the game, the U40 is used by the Revolutionary Brotherhood in the missions Parliament and University, by the United Fatherland Brigade in the missions Catacombs, Distillery and Hospital, and by the Marxist Radical Front in the missions Docks and Cruise Ship.
- The U40 is fitted with an unusable flashlight. The weapon is also modeled with a unique olive drab slide.