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MCS AirLock Pro On/Off CO₂ Saver Adapter for HDX 68, TX68, HDC 68C and TC68
The AirLock Pro On/Off CO₂ Saver Adapter is a genuine MCS (Modern Combat Sports) product that provides quick control of the CO₂ supply from an 88 g or 90 g cylinder. Its key advantage is compatibility with the original HDX 68 / TX68 stock, so the stock does not need to be replaced to gain ON/OFF control. The built-in bleed function releases residual pressure from the airgun after shut-off and allows unused CO₂ to remain in a punctured cylinder for later use.
- works with the original HDX 68 / TX68 stock,
- fast CO₂ control with a slide valve,
- preserves unused CO₂ in a punctured cylinder,
- built-in residual-pressure bleed function,
- for 88 g and 90 g CO₂ cylinders,
- compatible with HDX 68, TX68, HDC 68C and TC68,
- made from 6061 aluminium.
AirLock Pro On/Off CO₂ Saver Adapter for use with the original stock
The AirLock Pro is a genuine MCS (Modern Combat Sports) product designed to control the CO₂ supply from an 88 g or 90 g cylinder. Its slide valve allows the gas supply to be opened shortly before use and shut off again afterwards.
Key advantage: keep the original stock
The adapter can be used on the HDX 68 / TX68 with the original stock still fitted. This provides ON/OFF control of the CO₂ supply without replacing the factory stock.
Preserves CO₂ in a punctured cylinder
After an 88 g or 90 g CO₂ cylinder has been punctured, the adapter allows the gas supply to be shut off. Unused CO₂ can therefore remain in the cylinder for later use.
Residual-pressure bleed function
When the valve is closed, the built-in bleed function releases pressure trapped in the airgun. This makes subsequent handling easier and reduces prolonged stress on seals, O-rings and other internal components.
Fast operation
The slide valve opens or closes the CO₂ supply with a simple movement. The airgun can remain depressurised until it needs to be prepared for use.
Compatibility
- Umarex T4E HDX 68,
- Umarex T4E TX68,
- Umarex T4E HDC 68C,
- Umarex T4E TC68,
- 88 g and 90 g CO₂ cylinders.
Before ordering, check the cylinder type and the installation space required for the adapter in your specific airgun configuration.
Main features
- works with the original HDX 68 / TX68 stock,
- ON/OFF CO₂ supply control,
- fast-action slide valve,
- preserves unused CO₂ in a punctured cylinder,
- built-in residual-pressure bleed function,
- easy installation and operation,
- 6061 aluminium construction.
Technical specifications
| Manufacturer | MCS (Modern Combat Sports) |
|---|---|
| Model | AirLock Pro On/Off Air Saver Adapter |
| Manufacturer SKU | ALK-N3 |
| Purpose | CO₂ supply control and system depressurisation |
| Compatible cylinders | 88 g and 90 g CO₂ |
| Material | 6061 aluminium |
| Control | ON/OFF slide valve |
Package contents
- 1× AirLock Pro On/Off CO₂ Saver Adapter
CO₂ cylinder, airgun, stock and other pictured accessories are not included.
Safety information
Install the adapter only on a depressurised device and follow the manufacturer's instructions. Always shut off the CO₂ supply and confirm that the system is fully depressurised before handling. Do not expose the pressurised cylinder to high temperatures or mechanical damage. Check the threads and seals regularly; do not use a damaged or leaking adapter.
Frequently asked questions
Can the adapter be used with the original HDX 68 / TX68 stock?
Yes. The ability to retain the original stock is one of the adapter's main advantages.
Do I have to empty the entire CO₂ cylinder after use?
No. The valve allows the supply to be shut off so that unused CO₂ can remain in the punctured cylinder for later use.
What does the bleed function do?
After the supply is shut off, it releases residual pressure from the airgun, making handling easier and reducing stress on internal components.
Which cylinders is the adapter designed for?
It is designed for 88 g and 90 g CO₂ cylinders.
AirLock Pro On/Off CO₂ Saver adaptér pro HDX 68, TX 68, HDC 68C a TC 68
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