Abstract: An apparatus including an illumination member cooperative with a mechanical bolt, whereupon in a lowered position the apparatus effects blockage of an associated trigger of the firearm within the firearm mechanism while in a raised second position and effects electrical contact to further effect illumination of an indicator to provide visual indication of the firearm in a selective firing position. Alternatively, the mechanism may be oriented to effect illumination during the safety being in an engaged position with the associated trigger. Further modifications of the invention include a selective cover to overlie the illumination member, as well as a selective polarized lens support member to permit orientation of a variety of lenses into operative association with the illumination member to accommodate various light conditions in a shooting environment.