Stupid Airsoft features the Agent Tracer Unit from Ace Tech, a compact and versatile accessory designed to fit seamlessly within the Ace Tech and Poseidon FMG9 airsoft replica. Powered by a USB-C rechargeable battery, this tracer unit offers multiple functions controlled via a single button, allowing users to illuminate green and red BBs with ease. It features three operational modes: tracer-only, muzzle flash simulation-only, and a combined setting for both effects. Additionally, an auto sleep function helps conserve battery life. Installation is straightforward, and the presenter highlights its impressive performance by demonstrating each mode. He praises the unit’s thoughtful design, user-friendly operation, and secure fit, making it a standout addition to any airsoft setup.