Tokyo Marui M4A1 MWS Gas Blowback Rifle with Z-System - Black

Tokyo Marui M4A1 MWS Gas Blowback Rifle (Z-System) – Black

The Undisputed King of Gas Blowback Rifles.

For years, gas blowback rifle (GBBR) players had to make a painful compromise. You could have the realistic feel and instant trigger response of a gas gun, or you could have the skirmish-ready reliability of an electric AEG. You couldn’t have both. Cold weather, rapid firing, and fragile internal parts always got in the way.

Then Tokyo Marui dropped the M4A1 MWS with the revolutionary Z-System (ZET System).

This is widely considered the most reliable, gas-efficient, and skirmishable GBBR ever made. Marui didn't just build another M4; they completely re-engineered the bolt carrier group and trigger mechanism from scratch to create a hard-kicking rifle that runs flawlessly in typical chilly UK weather, dump after dump.

What Makes the TM MWS the Gold Standard?

1. The Revolutionary ZET System (Unmatched Durability)

In traditional GBBRs, the bolt catch wears down quickly from the violent metal-on-metal slamming, eventually failing to lock back when empty. TM solved this with the Z-System. It utilizes a unique shock-absorbing piston and roller design that prevents the bolt catch from shaving down, significantly extending the lifespan of your receiver and bolt.

2. Industry-Leading Cold Weather Performance

Historically, gas rifles struggle in cold temperatures due to the cooldown effect. Thanks to Tokyo Marui's hyper-efficient gas router design, lightweight aluminium bolt carrier, and specialized thermal-stabilizing magazine construction, the MWS handles rapid semi-auto shooting and full-auto bursts far better than any of its competitors—even during damp, cold UK winter skirmishes.

3. Cerakote® Finish as Standard

This rifle is built to be used hard. The upper and lower receivers, as well as the outer barrel, are coated in genuine Cerakote®, the exact same ultra-tough, scratch-resistant ceramic coating used on real military firearms. It gives the rifle a beautiful matte tactical finish that can withstand scratches, drops, and weathering.

4. Real-Steel Component Compatibility

For the players who love to customize, the MWS uses real-steel thread pitches on the receiver. This means you can fit authentic handguards, buffer tubes, pistol grips, and stocks directly onto the rifle with minimal modification.

Technical Specifications

• Power Source: Gas (Green Gas/144a/Abbey Ultra)
• Length: 777mm/854mm (Stock Retracted/Extended)
• Weight: 2,970g (Near-Perfect 1:1 Weight Distribution)
• Receiver Finish: Genuine Cerakote® Coating
• Inner Barrel Length: 250mm
• Magazine Capacity: 35 Rounds (Gas-tight Metal Magazine)
• Muzzle Velocity: 300 - 330 FPS (Highly Consistent on 0.20g BBs)

Inside the Box:

• Tokyo Marui M4A1 MWS Gas Blowback Rifle
• 1x 35-Round Metal Gas Magazine
• Chamber Safety Plug & Barrel Tool
• Cleaning Rod & High-Quality Sample BBs
• User Manual & Exploded Parts Diagram

BZ Tech Team Advice: Unleashing the MWS

Choosing the Right Gas Because Tokyo Marui guns are engineered for the Japanese market, they are designed to run perfectly on lower-pressure 144a gas. However, in the UK, we highly recommend using standard Green Gas (such as Nuprol 2.0 or Abbey Ultra) for crisp blowback and consistent FPS.

Avoid high-pressure red or black gases in warm weather, as the plastic nozzle inside the bolt can wear prematurely under excessive pressure. If you plan to run higher pressures, look at dropping in an upgraded aftermarket nozzle.

UKARA & Two-Tone Notice: A valid UKARA number or registered skirmisher defence is required to purchase this realistic imitation firearm in its original tactical black finish. If you do not have a registered defence, please choose our professional Two-Tone Service at checkout. We will paint over 51% of the rifle in a bright, legally compliant colour (please allow up to 10 additional days for processing).