We wanted to offer an air tank setup that was Made in the USA, so we sourced high quality cylinders locally and designed our own HP3 valve, which is now made here in America! The Omega Patriot provides portable high pressure air for refilling your precharged airgun while at home or in the field. The high pressure system provides ample fills on any size airgun cylinder, and reduces the frequency of having to travel to dive shops for a refill. This unit comes complete with the cylinder, HP3 valve and hose, making it ready to use with any standard 1/8" BSP adaptor which comes standard with most airguns. New with the Patriot cylinder is our custom HP3 4500psi certified, US-made Stainless-Steel valve. The HP3 valve features a small Stainless-Steel gauge which references the inner cylinder pressure so that you know your tank state of fill, and a large precision 2.25-inch, Stainless-Steel gauge that is oil filled and reads in both PSI and BAR measurements which allows you to accurately fill your airgun. The Foster-style fill port comes complete with a 1 Meter long Zero-Kink hose that can be tied in a knot without kinking, and includes an adapter to fit the valve, and a quick connect to adapt to most airgun fittings.