Don't let the lack of a convenient high pressure air supply keep you from shooting! The Umarex N2 Fill Station is the easy, compact, and convenient solution to filling afield, at home, or in place of an equipment failure. Simply stock up some Umarex NitroAir® 32 gram cartridges, our N2 Fill Station and use when you are ready. The N2 Fill Station accepts standard PCP male Foster fittings, either direct to the rifle, or with the appropriate hose.