An embodiment is a sling swivel that may be removably attached to and detached from a sling swivel base mounted on or within a firearm. More specifically, the sling swivel of an embodiment may be quickly detachable while not substantially prone to inadvertent detachment. An embodiment includes a knob coupled to a spring-biased plunger or actuator, wherein rotating the knob operates the plunger or actuator to removably attach and detach the sling swivel with respect to a sling swivel base.