The Nine Ball High Bullet Valve NEO R is an adjustable magazine valve designed for various Umarex (VFC) Glock GBB pistols. Nine Ball's High Bullet Valves series of valves are known for stability and consistency, this product is no different and will allow you to adjust the gas output depending on weather or desired velocity,

Compatibility: 

• Umarex (VFC) Glock 17 Series Gas Airsoft Guns
• Umarex (VFC) Glock 18c Gas Airsoft Gun
• Umarex (VFC) Glock 18c Long Magazine
• Umarex (VFC) Glock 19 Series Gas Airsoft Guns
• Umarex (VFC) Glock 19x Gas Airsoft Gun
• Umarex (VFC) Glock 45 Gas Airsoft Gun

Includes: 

• x1 Nine Ball High Bullet Valve NEO R for Umarex (VFC) G17 / G18c / G19 / G19X / G45 GBB Airsoft