The Special Air Service, more commonly known as the SAS, was one of the United Kingdoms special forces divisions. They appeared in a number of episodes, backing MI5 in their operations.
The SAS wore black combat armor. The weapons they used included M4 Carbines, MP5 Submachine Guns, HG36 Rifles, SIG 226 Pistols, HK417 Rifles, and Browning Hi-Power Pistols. They also used various grenades, and explosives.