Available now at Airsoft Extreme is the Poseidon x CSI Theseus PDW M4 AEG with Medusa ETU and Built-in Tracer. The Bluetooth-enabled Medusa Electronic Trigger Unit (ETU), allows for on-the-fly programming, diagnostics, and updates directly from your smartphone. It also includes a built-in Medusa Eye Hop-Up Tracer Unit that supports both red and green tracer BBs and can be quickly activated with a trigger press. This makes it ideal for fast-paced indoor CQB or evening skirmishes. Its lightweight polymer construction minimizes fatigue, while a robust V2 gearbox and Poseidon’s patented air cushion inner barrel ensure consistent accuracy. Additional features like an ambidextrous fire selector and an oversized battery compartment in the PDW-style stock.