The Flare Gun shoots a distress signal flare into the air in emergency situations; usually to signal an aircraft or ground team. It is a firearm, however, it is not intended as a weapon.
Rip Riley used one to threaten Archer after Archer threatened to toss the emergency beacon off the life raft that they were stranded on after Rip's plane crashed in the middle of the Pacific Ocean. Rip said "I'll shoot YOU, with a flare, and then I'll use a D-ration to burn two survival crackers to make s'mores over the crackling fire that used to be your chest cavity."
- "Heart of Archness: Part I," Rip has one