A holster having a holster body; a locking element having a helical ramp surface, wherein the locking element is at least rotatable between a locking element engaged position, wherein at least a portion of a locking projection portion of the locking element protrudes into an at least partial cavity portion of the holster and a locking element disengaged position, wherein at least a portion of the locking projection portion of the locking element is withdrawn from the at least partial cavity portion; and a release lever attached or coupled to a pushrod, and wherein as the release lever is urged toward the locking element, interaction between a first end of the pushrod and the helical ramp surface causes the locking element to rotate toward the release lever disengaged position.