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AirTac HPA Adapter — Tokyo Marui MWS / Double Eagle to M4 Magazine (Modular)

AirTac HPA Adapter — Tokyo Marui MWS / Double Eagle to M4 Magazine (Modular)

£129.95
£129.95
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DETAILS

SKU: 14793302
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⚠ CYMA / EMG CGS owners — this is NOT the correct adapter for your platform. The CYMA CGS uses different internal geometry. If you own a CYMA or EMG CGS MWS, a dedicated CGS-specific adapter is required. This adapter is for the Tokyo Marui MWS, all Double Eagle MWS clones, Guns Modify, Toxicant, Salvo Precision MCX Virtus, and related platforms — unless your MWS is made by CYMA.
⚠ Ghetto Blaster / Aeroknox owners. Due to the larger flared magwell on these platforms, an additional spacer is required between the modular top and the adapter's magwell. Contact us when ordering and we will ensure the spacer is included.

The AirTac MWS to M4 HPA Adapter is the definitive conversion for the Tokyo Marui MWS platform and its extensive range of compatible clones. The MWS is one of the most capable GBB rifles available — and HPA conversion is the single upgrade that unlocks its true potential, removing temperature sensitivity, delivering consistent FPS on every shot, and replacing the gas magazine system with the bottomless capacity of a standard M4 AEG magazine.

This adapter is a genuine plug-and-play unit: the valve, feed lips, and gas router are all pre-installed before it leaves the factory. There are no donor gas magazines to strip for parts, no assembly required, and no complex installation process. Every unit is individually tested in a Tokyo Marui MWS before shipping, so you know it has been proven functional in the exact platform it is designed for before it reaches you.

The gas router is injection-moulded to TM MWS specification — the same dimensions as the factory gas router — meaning it seals correctly in the MWS gas route without modification. Should you ever want to replace it, both the factory TM MWS gas router and aftermarket equivalents are dimensionally compatible. The high-flow valve design enables reliable cycling across the full RPS range including sustained full auto. A CNC machined magazine release and feed tube deliver precision fitment and durability at the components most likely to see repeated wear. A rear shim is included, which can be added to improve air seal where manufacturing tolerances between different MWS receiver brands create a slight gap — AirTac fit the shim that delivers best performance during testing before dispatch.

The large internal volume of the MWS adapter means field limits are typically achievable around 100–110psi — lower than pistol adapters — making this a comfortable, efficient setup for UK sites. The modular system allows configuration with different magwell bases for alternative magazine formats (M4, MP5, drum, or shotgun shell). PTS EPM1 is the recommended M4 magazine for best fitment and spring consistency.

Platform compatibility

Platform Compatible? Notes
Tokyo Marui MWS ✓ Yes Pre-tested in TM MWS before shipping
Double Eagle — Noveske, Aeroknox, Ghetto Blaster ✓ Yes — spacer required for GB/AK Ghetto Blaster and Aeroknox need spacer for flared magwell — contact us
Guns Modify MWS / SCAR-L ✓ Yes
Toxicant M4 pattern MWS ✓ Yes
Salvo Precision MCX Virtus ✓ Yes
CYMA / EMG CGS ✗ NOT compatible Requires dedicated CYMA CGS adapter — different internal geometry

What you need to run this adapter

Item Notes
HPA tank Any paintball/airsoft HPA tank — see HPA Tanks
Secondary regulator AirTac AT200 or equivalent — always required, never connect direct to tank regulator
HPA line US Foster fitting line — see HPA Lines
M4 AEG magazine PTS EPM1 recommended for best fitment and spring tension

Specifications

Specification Detail
SKU AT-MWS-M4
EAN 5056444747228
Architecture Plug-and-play — no donor parts required
Pre-shipment testing Every unit tested in a Tokyo Marui MWS before dispatch
Construction CNC machined and injection moulded components
Gas router Injection-moulded rubber to TM MWS spec — OEM compatible dimensions
Mag release / feed tube CNC machined
Recommended operating pressure 90–110psi (large internal volume — field limits comfortably achievable)
Maximum operating pressure 150psi — do not exceed
HPA fitting US Foster (standard) — pre-installed
Magazine compatibility Standard M4 AEG magazines; PTS EPM1 recommended
Feed lips TM MWS spec — OEM TM MWS feed lips also compatible
Modular system Yes — compatible with M4, MP5, drum and shotgun shell magwell bases
Warranty Lifetime warranty (AirTac)
Brand AirTac

Package Contents

Item Qty
AirTac MWS to M4 HPA Adapter (fully assembled, pre-tested) 1
Rear shim (pre-installed for optimal air seal) 1
Spare feed lips 1 set
🔧 Titan Forge Airsoft tip: The MWS is one of the most rewarding platforms for HPA conversion — the large internal volume means excellent pressure headroom, and consistent output transforms the rifle for both competitive and milsim use. The pre-tested assurance is worth noting: every unit leaving AirTac has been cycled in an actual TM MWS, so you're not the first person to run it. Ghetto Blaster or Aeroknox owners — flag this when you order so we can include the required spacer. For a complete HPA setup from scratch, see our HPA Guide or call us on 01494 911990.