HELLO , AFTER I JUST VISITED MY LGS I JUST PICKED UP A MODEL 66 4'' NO DASH . A MODEL 67 NO DASH, BOTH OF THESE HAVE A YELLOW RAMP FRONT SIGHT . I HAVE HEARD OF SOME 19'S BEING SHIPPED TO THE NAVAL INTELLIGENCE DEPARTMENT WITH YELLOW RAMPS . DOES ANYONE ELSE HAVE ANY INFO ON YELLOW RAMP GUNS FROM THE FACTORY . SHOULD I GET THESE 2 LETTERED