Looking like a heavy, high tech revolver, the BSAB injector is a snub nosed pistol crafted of stainless steel and white plastic. The revolving barrel makes it easy to load in medical refills and to change from one particular type of ant-biotic to another, depending on the nature of the patient's ailment. Held and operated like a pistol, the barrel of the BSAB injector is pressed against the skin of the patient, and when the trigger is pulled the selected anti-biotic is delivered.