An injector is provided for performing an injection operation comprising a housing (104), a needle extendable from a front end of the housing, a rear end of the housing and a longitudinal axis extending between the front end and the rear end, a safety pin (116) in an actuation locked position coupled to the housing and moveable to a safety released position coupled to the housing. The injector is locked against actuation when the safety pin is in the actuation locked position and the injector is ready for actuation of the injection operation when the safety pin is in the safety released position.