GHK M4 Series CO2 Magazine Release Valve O-Ring 3-Set

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This is a 3-set pack of release valve O-rings (large and small) compatible with GHK M4 series CO2 magazines.

[Product Features]
- Tested on GHK genuine CO2 magazines (V2) under high load conditions with a reinforced hammer spring.
- No gas leaks after approximately 1 year / 100 CO2 canisters of use.
- Optimized size for direct installation.

This product can be used as a countermeasure for the common issue of gas leaks from the release valve in GHK CO2 magazines.

[About Quality]
These O-rings are based on industrial-grade O-rings sourced domestically, with sizes selected and tested on actual equipment.
While not genuine parts, their performance in real-world use has been confirmed.

[Recommended for]
- Those who want to reliably fix gas leaks.
- Those who find selecting and measuring O-ring sizes troublesome.
- Those looking for a ready-to-use, compatible product.
- Those who want to secure spares for multiple magazine setups.

[Notes]
- Proper greasing and correct installation are assumed.
- Please be careful not to overtighten the valve, as this can crush the O-ring and compromise airtightness.
- Testing was conducted in the Kanto region; verification in extreme cold (below 0°C) has not been performed.

[Support]
If gas leaks persist, we offer support on greasing methods and installation tips.

Please utilize this product for the maintenance of your often problematic GHK CO2 magazines.