A direct view optical sighting system comprising: an eyepiece; an objective configured to receive scene light from a viewed scene and direct the scene light along an optical path to the eyepiece; a laser rangefinder configured to emit a laser transmit beam and to receive a laser return beam corresponding to at least a portion of the laser transmit beam reflected from an object in the viewed scene; a laser rangefinder coupling prism configured to direct the laser transmit beam from the laser rangefinder to the objective via reflections; a display assembly including a reticle prism and a display coupling prism, the reticle prism being positioned along the optical path between the laser rangefinder coupling prism and the display coupling prism, the reticle prism having a hard reticle formed on a first surface thereof, the objective being configured to produce a first focal plane of the optical sighting system coincident with the first surface of the reticle prism, the display coupling prism being configured to couple display light into the optical path and to direct the display light toward the eyepiece via reflections; and a zoom relay positioned between the display coupling prism and the eyepiece, the zoom relay being configured to relay the scene light along the optical path from the first focal plane to a second focal plane positioned between the zoom relay and the eyepiece, the zoom relay being further configured to adjust a magnification of the optical sighting system over a predetermined magnification range, and an aperture stop of the optical sighting system being positioned within the zoom relay; and characterised in that the laser rangefinder coupling prism is configured to direct the laser transmit beam from the laser rangefinder to the objective via reflections off two surfaces (232,234,332,334) of the laser rangefinder coupling prism, and to direct the laser return beam from the objective to the laser rangefinder via reflections off the two surfaces of the laser rangefinder coupling prism, and wherein the display coupling prism is configured to direct the display light toward the eyepiece via reflections off two surfaces of the display coupling prism. an eyepiece; an objective configured to receive scene light from a viewed scene and direct the scene light along an optical path to the eyepiece; a laser rangefinder configured to emit a laser transmit beam and to receive a laser return beam corresponding to at least a portion of the laser transmit beam reflected from an object in the viewed scene; a laser rangefinder coupling prism configured to direct the laser transmit beam from the laser rangefinder to the objective via reflections; a display assembly including a reticle prism and a display coupling prism, the reticle prism being positioned along the optical path between the laser rangefinder coupling prism and the display coupling prism, the reticle prism having a hard reticle formed on a first surface thereof, the objective being configured to produce a first focal plane of the optical sighting system coincident with the first surface of the reticle prism, the display coupling prism being configured to couple display light into the optical path and to direct the display light toward the eyepiece via reflections; and a zoom relay positioned between the display coupling prism and the eyepiece, the zoom relay being configured to relay the scene light along the optical path from the first focal plane to a second focal plane positioned between the zoom relay and the eyepiece, the zoom relay being further configured to adjust a magnification of the optical sighting system over a predetermined magnification range, and an aperture stop of the optical sighting system being positioned within the zoom relay; and characterised in that the laser rangefinder coupling prism is configured to direct the laser transmit beam from the laser rangefinder to the objective via reflections off two surfaces (232,234,332,334) of the laser rangefinder coupling prism, and to direct the laser return beam from the objective to the laser rangefinder via reflections off the two surfaces of the laser rangefinder coupling prism, and wherein the display coupling prism is configured to direct the display light toward the eyepiece via reflections off two surfaces of the display coupling prism.