The Stinger is a light BattleMech that was built in 2479 as a direct competitor to the Wasp BattleMech. The Stingers various roles include reconnaissance, scouting, raiding and as a trainer 'Mech. The Stingers light but varied armament as well as its jumping capability of 180 meters make it suitable for these various roles. As of 3025 it was estimated that there were somewhere around five thousand Stingers left in use by the various states of the Inner Sphere.
- STG-5M - This upgraded version of the Stinger takes advantage of several new technologies. The chassis has been upgraded to Endo Steel and the 'Mech carries a Anti-Missile System, Medium Laser, and Flamer.
- STG-5R - The 5R variant of the Stinger uses Ferro-Fibrous Armor and carries a Medium Laser and two LRM15s.
- STG-6L - The 6L variant of the Stinger utilizes an Endo Steel structure and Stealth Armor. The ‘Mech carries two Medium Lasers and a Guardian ECM Suite.