The Vorsk VM9 CO2 Magazine is a 24-round capacity magazine designed specifically for the Vorsk VM9 and VM9 OSIRIS series airsoft pistols. It is constructed with a CNC metal body for durability and features a side-loading CO₂ bulb system. 
Key Features and Compatibility
Capacity: Holds approximately 24 rounds of 6mm BBs.
Compatibility: This magazine is a direct fit for the Vorsk VM9 and Vorsk VM9 OSIRIS gas blowback (GBB) pistols.
Material: The body is made from CNC metal, while the feed lips and follower are made from polymer.
CO₂ System: It uses a convenient side-loading CO₂ bulb system, which can be useful for reliable performance in colder weather conditions, reducing the effect of cooldown compared to standard green gas magazines.
Maintenance Note: According to Vorsk, a small amount of gas should remain in the magazine after use to keep the internal seals pressurized and prevent them from drying out.