AIM ENHANCING SYSTEM

Aim enhancing systems are provided for deterrent devices. In one aspect an aim enhancing system has a light emitting system; an optical element, a housing holding the laser system and the light emitting system and having an opening through which a light from the light emitting system can pass from inside the housing to outside the housing and an optical element receiving surface against which an outer surface of the optical element can be positioned, resilient biasing member having an opening through which the light can pass, an outer surface arranged to confront an inner surface of the optical element, and an inner surface; and a pressure surface pressing the inner surface of the resilient biasing member toward the optical element to resiliently hold the inner receiving surface against the outer surface of the optical element. The optical element is resiliently pressed against the housing and the housing and resilient element are shaped to cooperate when pressed together define a first barrier to contaminant travel into the housing through the opening and wherein the resilient biasing member is arranged to provide a second barrier to contaminant travel between the opening and the light emitting system.