Bridle - A small secondary plate, mounted behind and parallel to a sidelock gun's lockplate which supports the other end of the pins about which the moving parts rotate. In the above photo of a Holland & Holland-type bar-action lock, the bridle is the small, curvaceous, pierced plate mounted below the face of the hammer, fastened to the main lockplate by three screws and through which the tumbler pin and two others revolve.


Note the solid, integrally-machined bridle on this Beretta SO-3 sidelock.  Just one less thing to go wrong.


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