Abstract: The invention comprises a quick-release locking device for attachment of an accessory having a threaded shaft at one end thereof to an archer's bow. This locking device includes a body having a bore extending therein, which bore is sized so that the shaft of the accessory may be inserted therein. The device also includes a shaft engagement mechanism within the body which is adapted to engage the threads of the shaft of the accessory within the bore, and a manually operable release mechanism within the body which may be actuated to release the engagement mechanism from the shaft. The locking device may be incorporated into the handle or riser of a bow, or it may be provided in the form of an attachment that can be threaded into the existing accessory hole of a conventional bow.