Marui M4 S-System AEG – SIR Rail System, Adjustable Stock

The Tokyo Marui M4 S-System is based on the A.R.M.S. SIR (Selective Integrated Rail) system, featuring four Picatinny rails for maximum accessory compatibility. This configuration allows you to mount optics, lights, lasers, vertical grips or bipods exactly as needed.

The construction emphasizes durability and realism. A one-piece aluminium outer barrel enhances strength, while the internal metal frame adds rigidity and weight. The six-position adjustable stock extends the rifle from 768 mm to 850 mm, ensuring ergonomic comfort for various players and scenarios.

Flip-up front and rear sights provide a clear sight picture and can be folded down when using optics. The battery compartment is housed within the SIR foregrip, allowing quick and tool-free battery changes using a mini-type 8.4V battery.

Balanced and robust, the M4 S-System performs well in both CQB and outdoor field environments. Combined with Tokyo Marui’s renowned reliability, it is a solid choice for serious airsoft players.

This gun does not come with a battery or charger, so take advantage of the offers shown on the left when purchasing this weapon.

• Model: Tokyo Marui M4 S-System

• System: Electric (AEG)

• Fire modes: Safe / Semi / Full Auto

• Magazine: 68 rounds

• Length: 768–850 mm

• Weight: 4100 g

• Muzzle velocity (0.20 g): approx. 90 m/s

• Battery: 8.4V Mini (not included)

• Hop-up: Adjustable

• Rails: Quad SIR / Picatinny system

• Construction: Metal and polymer

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