Cyma Magazine MWS/CGS Realcap 30rds

The CYMA Magazine MWS/CGS Real-Cap 30rds is a gas-operated magazine for CYMA/EMG CGS and Tokyo Marui MWS-spec M4 GBBR platforms. With a capacity of 30 BBs, this magazine deliberately follows a real-cap configuration, meaning the number of BBs corresponds to the capacity of a standard 30-round AR/STANAG magazine.

The magazine combines a metal STANAG-style outer casing with an internal CNC-machined 6061 aluminium gas cylinder and various reinforced internal components. This makes it not only a useful spare magazine, but also ideal for players who deliberately opt for a more realistic GBBR experience with genuine 30-round reloads.

30 BB real-cap capacity

The CYMA CGS-MG-0001 has a capacity of 30 6mm BBs.

This makes this magazine very different from mid-cap or high-cap AEG magazines, which hold hundreds of BBs. After a maximum of 30 shots, you actually have to reload, which means that magazine management plays a much greater role during the game.

For milsim, training and realistic GBBR loadouts, that is precisely a key part of their appeal.

For example, a plate carrier with six of these magazines has a nominal capacity of 180 BBs. It’s not exactly a walking BB container, but it is a fair bit closer to the experience for which a GBBR is typically chosen.

For CYMA CGS and Tokyo Marui MWS

The magazine has been designed for the CYMA / EMG CGS GBBR platform and is also compatible with Tokyo Marui MWS-spec M4 GBBRs.

The MWS platform is used by various manufacturers as the basis for aftermarket replicas and parts. However, tolerances between different receivers, magazine catches and aftermarket components may vary slightly.

You should therefore always check, when using a new platform, whether the warehouse:

• Correct in de magazine well vergrendelt.
• It can be fitted without using excessive force.
• The bolt catch engages correctly when the magazine is empty.
• Seals well against the nozzle.
• Feeds BBs without a hitch.

STANAG metal outer jacket

The exterior features a classic STANAG-style metal casing.

As a result, the magazine has the look and feel of a traditional metal AR/M4 magazine. This is particularly well-suited to M4, M16, MK18 and similar GBBR builds where a classic STANAG magazine is required.

The metal structure also accounts for the characteristic weight associated with a gas storage facility.

There is a good reason for the extra weight on a GBBR: as well as BBs, the magazine also contains the gas reservoir, valves and seals required to drive the blowback cycle.

CNC 6061 aluminium gastank

Inside, CYMA uses a CNC-machined 6061 aluminium gas tank.

This internal gas tank serves as the reservoir in which the propellant is stored. Aluminium makes it possible to combine a sturdy, pressure-resistant structure with a lower weight than if all internal components were made entirely of steel.

As with any gas storage facility, the gas pressure remains highly dependent on temperature. In cold weather, the pressure of Green Gas decreases, which can result in both the blowback and gas efficiency becoming less powerful.

This is normal behaviour for a GBBR and does not necessarily mean that the magazine is faulty.

Improved magazine lip

CYMA fits the magazine with an Enhanced Magazine Lip.

The feed lips hold the BBs in place at the top of the magazine and ensure that they are correctly fed towards the hop-up chamber during the bolt’s cyclical movement.

Feed lips are key components in GBBR magazines and can be damaged if a loaded magazine falls hard onto its top.

It is therefore advisable not to allow gas cylinders to land on the feed lips unnecessarily during transport and reloading.

70° gas route seal

At the top there is a 70-degree gas route seal.

During firing, this rubber seal forms the connection between the magazine and the nozzle. A proper seal is essential for channelling the gas as efficiently as possible from the magazine to the blowback system.

Damage, dirt or drying out of this seal may result in reduced gas efficiency or erratic operation.

You should therefore check the surface regularly and, as part of routine GBBR maintenance, keep the seals lightly lubricated with a suitable silicone product.

Steel high-flow gas valve

The warehouse uses a steel high-flow gas valve.

This output valve determines how much gas is made available to the system from the storage tank during each cycle.

The sturdy steel structure is designed for long-term mechanical use and is consistent with the other reinforced components of the CYMA CGS warehouse.

According to CYMA, the valve hit pin is also made of steel.

Green Gas GBBR warehouse

This storage facility is intended for use as a gas storage facility within the MWS/CGS system and is offered for use with Green Gas.

When filling, the gas cylinder must be positioned as upright as possible on the filling valve. If the cylinder and valve are at a steep angle, gas may escape from the side of the valve and put unnecessary strain on the seals.

After filling, it is normal for a storage tank to become colder. Gas expands during use, thereby drawing heat from the storage tank.

The faster shots are fired in quick succession, the more noticeable this so-called ‘cooldown’ effect can become.

Practical insights

A GBBR magazine is technically considerably more complex than an AEG magazine. As well as BBs, it contains a pressure reservoir, a filling valve, an output valve, a gas route seal and various seals.

As a result, a gas storage facility also requires a little more attention during storage and maintenance.

For longer-term storage, it is preferable not to leave a GBBR cylinder completely depressurised and bone-dry. A small amount of suitable gas can help to maintain a slight pressure on the internal seals. Always follow the recommendations of the manufacturer of the gas and the cylinder being used.

Furthermore, never leave gas canisters in a hot car, in direct sunlight or in any other extremely hot environment for long periods. This is because the internal gas pressure increases as the temperature rises.

In cold weather, it works exactly the other way round: lower temperatures mean lower gas pressure and, generally, less powerful blowback and fewer shots per gas charge.

Who is the CYMA MWS/CGS 30rds suitable for?

The CYMA MWS/CGS Real-Cap 30rds is particularly suitable for users of a CYMA/EMG CGS or Tokyo Marui MWS-spec M4 GBBR who are looking for a reliable spare or additional magazine.

Its genuine 30-round capacity makes it particularly appealing to milsim players and users who value realistic reloads and magazine management.

Even when training with a GBBR platform, a real-cap magazine offers a completely different experience to a replica, as it provides hundreds of BBs without the need to reload.

Specificaties

• Note: CYMA
• Series: CGS
• Manufacturer’s number: CGS-MG-0001
• Article type: Gas storage facility
• Warehouse type: Real-Cap
• Platform: AR / M4
• System: GBBR
• Compatibiliteit: CYMA / EMG CGS
• Compatibiliteit: Tokyo Marui MWS
• Capacity: 30 BBs
• Calibre: 6 mm BB
• Gastype: Green Gas
• Colour: Black
• Outer jacket: Metal / STANAG-style
• Gastank: CNC 6061 aluminium
• Magazine lip: Enhanced Magazine Lip
• Gas route seal: 70°
• Output valve: Steel High-Flow Gas Valve
• Valve hit pin: Steel
• Bolt-stop functionality: Platform-dependent / MWS-spec

Contents of the pack

• 1x CYMA MWS/CGS Real-Cap 30rds Gas Magazine Black

Common mistakes

• Do not confuse this GBBR gas magazine with an M4 AEG magazine.
• Use the magazine exclusively in compatible MWS/CGS-spec GBBR platforms.
• Do not automatically assume that every MWS-based aftermarket receiver will fit perfectly.
• Always check that the magazine locks correctly into the magazine catch.
• After installation, check that the gas route seal fits correctly onto the nozzle.
• Do not force a magazine that fits tightly into the magazine well.
• Do not store the gas cylinder in the storeroom at a steep angle.
• Do not expose a filled gas cylinder to high temperatures or direct sunlight for prolonged periods.
• In cold weather, expect lower gas pressure and reduced gas efficiency.
• Do not let the magazine drop onto the feed lips regularly.
• Do not use thick oil or grease on the feed lips, BB channel or hop-up-related parts.
• For seals, use only maintenance products that are suitable for airsoft gas magazines.
• Do not overtighten valves unnecessarily; this may damage the seals or the thread.
• If a cartridge is slowly losing gas, first check for dirt and dry O-rings.
• Only dismantle a magazine if you have sufficient experience with pressurised GBBR magazines.
• Always release all gas pressure before dismantling any valves or the gas cylinder.
• Don’t expect a capacity of 30+ BBs; this is deliberately a real-cap magazine holding 30 BBs.

Frequently Asked Questions

How many BBs will fit in this CYMA magazine?
The magazine has a capacity of 30 BBs.

Why is this called a ‘real-cap’?
The capacity of 30 BBs corresponds to the standard capacity of a genuine AR/STANAG magazine. This is intended to make reloading more realistic during the game.

Is this storage unit suitable for CYMA CGS?
Yes. The storage unit is specifically part of the CYMA CGS range.

Is it suitable for the Tokyo Marui MWS?
Yes. Compatibility with the Tokyo Marui MWS M4 GBB series is specified.

Will it fit in a standard M4 AEG?
No. This is a GBBR gas magazine and it will not fit properly in a standard M4 AEG.

Is this a Green Gas storage facility?
Yes. The storage facility is intended for use as a gas storage facility within the CGS/MWS platform and is offered for Green Gas use.

What material is the outer casing made of?
The outer casing is made of STANAG-style metal.

What is the gas tank made of?
CYMA uses a CNC-machined 6061 aluminium gas tank.

What is a gas route seal?
This is the rubber seal on top of the magazine which, when firing, connects to the nozzle and directs the gas towards the blowback system.

Which gas route does this warehouse use?
CYMA specifies a 70-degree gas route seal.

Does the warehouse have a high-flow valve?
Yes. It uses a steel high-flow gas valve.

Does the bolt stop after the last BB?
The magazine is designed for the MWS/CGS system, in which the bolt-stop function is part of the operation after the magazine has been emptied. Correct operation depends on the replica and its adjustment.

How should I store a gas cylinder?
Store it in a cool, dry place, away from direct sunlight and extreme heat. For long-term storage, a small amount of suitable gas is usually left in the cylinder to ensure that the internal seals do not become completely depressurised and dry.

Why does my magazine perform less well in cold weather?
The pressure of Green Gas decreases as the temperature drops. This can lead to a reduction in blowback, cyclic rate and the number of shots per gas charge.

How heavy is the magazine?
Various suppliers quote different figures ranging from approximately 400 to 480 grams. As these figures are not consistent, we do not include an exact weight as a fixed specification.

The CYMA Magazine MWS/CGS Real-Cap 30rds combines a realistic 30-round capacity with a metal STANAG casing, a CNC-machined aluminium gas tank and reinforced gas components for CYMA CGS and Tokyo Marui MWS-spec GBBR platforms.