A multi-aiming point reticle for use in an optical scope is described including both range-finding and aiming points. The reticle, and scope incorporating the same, finds special utility for combination with a rocket propelled grenade (RPG) launcher to hit targets at extended distances. A method of operation is also described.

An accessory system for a firearm includes a target sight secured to a mounting rail of the firearm, an accessory secured to the mounting rail of the firearm, a sensor configured to sense a position of the accessory, and a processor configured to receive input from the sensor and adjust an operating mode of the target sight based on the input from the sensor. The sensor may be a magnetic sensor, a proximity sensor, an ambient light sensor, or a switch. Methods are also described.

An accessory system for a firearm includes a positionable magnifier, an accessory structured to operate in conjunction with the magnifier, a sensor configured to sense a position of the magnifier, and a processor configured to receive input from the sensor and adjust an operating mode of the accessory based on the input from the sensor. Methods are also described.

A viewer for an optical data insertion device and a combined system comprising a viewer and an optical data insertion device. The optical data insertion device comprising a projector operable to project a visible image and a light guiding device operable to direct light from the projector into the viewer. The viewer comprising an objective lens, an eyepiece lens and a diffuser screen provided between the objective lens and the eyepiece lens.

A viewer for an optical data insertion device and a combined system comprising a viewer and an optical data insertion device. The optical data insertion device comprising a projector operable to project a visible image and a light guiding device operable to direct light from the projector into the viewer. The viewer comprising an objective lens, an eyepiece lens and a diffuser screen provided between the objective lens and the eyepiece lens.