2181 (MMCLXXXI) was a common year starting on Monday of the Gregorian calendar (dominical letter G), the 2181st year of the Common Era (CE) and Anno Domini (AD) designations, the 181st year of the 3rd millennium, the 81st year of the 22nd century, and the 2nd year of the 2180s decade.
Events
- The M10 Auto Pistol was procured for United States Colonial Marine Corps service.
- Armat Battlefield Systems released the M1771 Cobra Max Tactical for Colonial Marshalls service.
Appearances
- Aliens: Fireteam Elite (mentioned only)