Abstract: A trigger cover for a firearm comprising an enclosure defining a space configured to receive a trigger guard. The enclosure has side panels configured to prevent operational access to the trigger, and an aperture configured to receive an elongated strap. The strap is received in the aperture and is configured to secure the enclosure to the firearm. The strap is resistant to toolless removal, and readily severable with a tool to enable removal of the enclosure.

Abstract: A sighting instrument includes a sighting tube mounted on a base, which is attached to a rifle for sighting the rifle by the user with his eye positioned along the optical axis of the instrument and elevation and windage adjustment controls rotate the tube with respect to the rifle about axes transverse to the rifle, one horizontal at the front of the instrument for elevation adjustment and the other vertical at the rear of the instrument for windage adjustment, the elevation adjustment control being at the rear of the instrument and providing the windage axis, the windage adjustment control being at the front of the instrument and providing the elevation axis and both controls: are carried by the base, are flexibly connected to the tube and can be manipulated readily by finger without a tool; and are readily accessible by the user's while the user is sighting the rifle.

Abstract: In a reflex luminous dot firearm sighting instrument that includes a housing having an objective end and an ocular end defining an optical axis, an LED and a battery and control circuit for the LED and a tilted reflecting window or lens in the housing having a reflective coating that reflects the LED light while transmitting target light so that the target viewed through the instrument has a luminous dot of LED light superimposed thereon, a contoured non-reflective surface is provided alongside the luminous dot light path between the LED and the tilted reflecting window or lens inside the instrument for blocking undesired reflections of LED light so that they do not reach the eye.

Abstract: In a luminous dot sighting instrument: dots of different color are produced using different mirror coatings that differentially reflect different wavelengths of light from a single diode or several diodes of the same color, or from different color diodes; dots at different positions on the image of the target view of the instrument are obtained by spacing apart mirror coatings for reflecting light from a single diode, or by by spacing apart several diodes, or a combination of both; dots of different brightness on the image of the target view are obtained by spacing apart mirror coatings for reflecting light from a single diode so that light reflects from the near side and from the far side of the lens and so the far side reflected light is less bright on the image than the near side reflected light; and some embodiments incorporate more than one or all of these features.