CYMA CGS
CYMA CGS (CYMA Gas System) is a modern gas-powered GBBR system designed for airsoft replicas of the AR15 / M4 platform. It is engineered as a highly compatible alternative to the Tokyo Marui MWS system. CGS combines the proven MWS concept with more durable materials, modern design improvements, and greater variability, while maintaining wide availability of spare and upgrade parts. The CGS system is therefore an ideal choice for players who want a realistic gas-powered M4-style rifle while also demanding durability, upgrade potential, and excellent out-of-the-box performance. Thanks to its MWS compatibility, CGS is suitable both for beginners entering the GBBR world and for experienced users who want to build their own custom configuration. Gas rifles CYMA CGS GBBR can be found in our range.
CYMA EMG Daniel Defense M4A1 RIII 12.5" GBBR
Origin and purpose of the CYMA CGS system
The CGS system was developed in response to demand for a more robust and more affordable GBBR solution based on the legendary Tokyo Marui MWS platform, while eliminating its typical weaknesses—especially the lower durability of certain parts and more limited usability with stronger gas types. During development, CYMA cooperated with T8 Systems and focused on steel functional components, increased reliability, and compatibility with MWS upgrades.
CYMA CGS vs. Tokyo Marui MWS – key differences
- Materials: CGS uses more steel components (trigger, bolt catch), while the MWS is more focused on lightweight alloys with higher-quality external parts.
- Gas tolerance: CGS handles stronger gases better than a stock MWS.
- Hop-up: CGS features a quick-detachable (QD) hop-up chamber with TDC pressure adjustment.
- Trigger mechanism: CGS is equipped with an adjustable steel trigger box from T8 Systems.
- Price: CGS is usually more affordable than the original Tokyo Marui MWS.
CYMA CGS compatibility with Tokyo Marui MWS
One of the biggest advantages of the CGS system is its high compatibility with the MWS ecosystem, allowing easy upgrades and servicing.
Part | Compatibility status | Note |
|---|---|---|
Magazine | Fully compatible | CYMA CGS ↔ TM MWS magazines work both ways |
BCG (bolt carrier) | Fully compatible | LS version uses an aluminum carrier for faster cycling |
Nozzle | Fully compatible | Supports upgrade nozzles (Angry Gun, etc.) |
Trigger group | Fully compatible | Steel adjustable trigger box by T8 Systems |
Receiver and external parts | Fully compatible | Standard AR15 (stock, grip, selector) |
Bolt catch | Partially compatible | Steel T8 bolt catch, sometimes requires minor DIY fitting |
Hop-up chamber | Not compatible | Different QD design with TDC pressure adjustment |
What makes CYMA CGS unique
- MWS upgrade compatibility – huge aftermarket support.
- Higher mechanical durability thanks to steel components.
- Modern hop-up solution with TDC pressure adjustment.
- Realistic operation and strong blowback typical of GBBR systems.
- Excellent price-to-performance ratio compared to the original MWS.
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