Maxx Model Double O-Ring Air Seal Nozzle is crafted using a very lightweight aluminum alloy with a smooth finish. When using performance components such as this Maxx air nozzle, prepare to expect a definite increase in FPS and shooting performance. Unlike many other upgrades, this component will not increase the wear and tear on other gearbox parts while installed. The durable rubber o-rings located inside the body serve to further keep air from escaping while firing your AEG, meaning a tighter air compression.  Features: Easy to install choice as an upgrade Adds FPS to overall muzzle velocity High quality and long lasting component CNC crafted single piece enhances durability Compatible with the version 2 gearbox AEGs Keeps a tight air seal with the hop up bucking Accommodates most version 2 metal gearboxes Lightweight aluminum alloy with a smooth finish Two pre-installed O-rings located inside air nozzle Double O-ring air nozzle provides an excellent seal Color: Titanium Length: Adjustable from 37mm to 40mm  Required: Loctie medium