2171 (MMCLXXI) was a common year starting on Monday of the Gregorian calendar (dominical letter G), the 2171st year of the Common Era (CE) and Anno Domini (AD) designations, the 171st year of the 3rd millennium, the 71st year of the 22nd century, and the 2nd year of the 2170s decade.
Events
- The M41A Pulse Rifle is adopted by the United States Army and the United States Colonial Marine Corps.
- The Weyland-Yutani Corporation introduces the Bishop model synthetic.
- Hyperdyne Systems released the Frontier Revolver and buy its independence back from Weyland-Yutani.
- Armat Battlefield Systems released the M94 Impact Grenade.
Appearances
- Aliens: Colonial Marines Technical Manual (mentioned only)
- Alien: The Weyland-Yutani Report (mentioned only)
- Alien: The Roleplaying Game — Colonial Marines Operations Manual (mentioned only)
- Aliens: Fireteam Elite (mentioned only)