Prometheus is one of the best, if not the best, names in airsoft. They are widely known for their extremely high quality upgrade parts for all different types of guns. The Prometheus Aero Cylinder Head for Ver. 7 Gearbox is a highly effective upgrade part to ensure maximum compression from your cylinder. This Cylinder head is completely metal, a great upgrade from the hybrid plastic/metal cylinder heads that come stock in most guns. It also has a rubber o-ring to give it an air tight seal against the cylinder. If you want the best, forget the rest, the Prometheus Aero Cylinder head is what you need.
Disclaimer: All airsoft guns are required to have the tip (1/4 inch) of the barrel permanently colored in blaze orange. No person may openly display or expose any imitation firearm (replica firearm), in a public place. The term "public place" means an area open to the public or exposed to public view and includes streets, sidewalks, bridges, alleys, plazas, parks, driveways, parking lots, automobiles, whether moving or not, and buildings open to the general public, including those that serve food or drink, or provide entertainment, and the doorways and entrances to buildings or dwellings and the grounds enclosing them. Any person who changes, alters, removes, or obliterates any coloration or markings that are required for by any applicable state or federal law or regulation, for any imitation firearm (replica firearm), or device in any way that makes the imitation firearm (replica firearm) or device look more like a firearm is guilty of violating the state or federal law. By accessing the Site, you certify that you are older than 18 years of age or the age of majority where you live, whichever is older; that you are the owner of any credit card used to purchase on items on the Site; that you are familiar with all local laws in your area affecting your legal right to access airsoft products; that any products you buy are for your own private enjoyment and that you will NEVER share these products with a minor in ANY WAY.