XQ4 MEDUSA AEG

Who is Poseidon?

Poseidon is a cutting-edge Taiwanese airsoft manufacturer known for pioneering innovations like the Air-Cushion precision barrels and anti-icer systems for GBB platforms. In collaboration with CSI, another high-quality Taiwanese brand, Poseidon has brought to life a new standard of performance replicas, emphasizing technological excellence, unique design, and competitive performance straight out of the box.

Materials & Build

• Handguard: CNC aluminum (M-LOK or KeyMod depending on model)

• Receiver: High-durability solid fiber-reinforced polymer

• Stock: Adjustable 3-position stock with large battery compartment

• Weight:

  • Short: 2100g

  • Medium: 2220g

  • Long: 2300g

• Length (stock closed):

  • Short: 540mm

  • Medium: 635mm

  • Long: 755mm (+10cm when extended)

Internal Features

• Reinforced 8mm gearbox with quick spring change system

• 8mm steel bushings

• 18:1 steel MIM gears – high stress-resistance

• 15 metal tooth piston

• POM piston head, cylinder head, and tappet plate

• Precision 6.02mm Air-Cushion barrel (GEN2)

• 18K high-torque motor

• 11.1v LiPo Ready

• Speed trigger

• Ambidextrous fire selector

• T-Plug connector (Deans style)

Hop-Up & Tracer System

• Integrated Eyes of Medusa® Hop-Up tracer system – ON/OFF via smartphone app

• Includes Viper’s Kiss® Tracer silencer (on designated models)

• QD flash hider for fast suppressor attachment

Electronics – Medusa® ETU (Electronic Trigger Unit)

• Fully optical control system (no mechanical switches)

• Bluetooth connectivity (iOS & Android app support)

• Control Features:

  • Custom trigger programming (semi, burst, full-auto – up to 10 rounds per burst)

  • Binary trigger mode

  • Adjustable trigger sensitivity (1–5 levels)

  • Remote fire button (for testing, not field use)

  • Real-time display: battery type, voltage, discharge current, temperature

  • BB counter and non-resettable total shot count

• Bug screen for error/event tracking

• Settings screen: firmware updates, custom replica naming, and calibration (for advanced users)

In the Box

•  XQ4 AEG

• Mid-cap magazine (220 rounds)

• Manual

• Flash hider