FIM-92 Stinger

The FIM-92 Stinger launcher is a light-weight passive surface-to-air missile launcher that is designed primarily for anti-aircraft usage.

In Resident Evil 2
The Stinger launcher is loaded with two rockets and is found near the end of either player's B Scenario, thrown to the player by Ada Wong to defeat the mutated T-103 known as T-00. An infinite version can also be gained by beating the game in under three hours. It also appears in Chris Redfield's inventory in the Extreme Battle minigame.

It also appears in Resident Evil 2 scenario of Resident Evil: Darkside Chronicles.

In Resident Evil 3: Nemesis
A modified FIM-92 is used by the Nemesis. It is used randomly by Nemesis throughout the game and is eventually destroyed by Carlos Oliveira while in battle against Nemesis.

It also appears in the Resident Evil 3 scenario of Resident Evil: The Umbrella Chronicles.

Operation Raccoon City
The Inserted Evil ARG has confirmed the presence of a Nemesis-T Type in Operation Raccoon City. In the video of Nemesis awakening, he is seen scanning a room and seeing his signature rocket launcher.

Trivia

 * After obtaining this weapon In Resident Evil 2, it will instantly low the player's Ranks even if they finished the game in less than 2 hours and all the requirements to obtain an A RANK.