Multi function refill adaptor for gas operated airguns

A multi function adaptor for use with a gas operated airgun facilitating use of a compressed gas propellant and the refilling of a gas supply vessel connected to said airgun from an external bulk gas supply source, said adaptor comprising:

• a strut comprising a hollow cylinder including external and internal walls;
• a threaded section at one end of said strut adapted to be connected to said airgun;
• a first sleeve comprising a hollow cylinder positioned over an upper section of said strut;
• a first sump;
• said first sleeve including a first orifice connected to said first sump, said orifice adapted to be connected to said gas supply vessel;
• a second sump;
• a second orifice connecting said first sump to said second sump;
• a reverse check valve internal to said strut;
• a third sump;
• a third orifice connecting said third sump to said strut external walls;
• a second sleeve positioned over the lower portion of said strut, sealing said third orifice facilitating the flow of gas from said gas supply vessel through said adaptor to said airgun;
• and as a replacement for said second sleeve, a third sleeve, positioned over the lower portion of said strut;
• said third sleeve including an orifice in connection with said strut third orifice extending to said third sump;
• facilitating the flow of gas from an external bulk supply source through said adaptor to said gas supply vessel.