An optical projection system (12) for a weapon system aiming scope (10) having at least objective and ocular lenses (24, 26) defining an optical path through which a target image (30) is observed. The projection system (12) includes a primary beamsplitter (62) positioned in the optical path, a secondary beamsplitter (64) positioned adjacent the primary beamsplitter (62) and off the optical path, a micro-display (60) that provides a data image (38, 88) containing targeting information (100, 101, 102, 104, 106, 108, 110, 112), and an illumination source (52). The illumination source (52) generates light directed through the secondary beamsplitter (64) to illuminate and reflect off the micro-display (60) so as to define a reflected data image (88), and the secondary beamsplitter (64) directs the reflected data image (88) into the primary beamsplitter (62). The primary beamsplitter (62) combines the data image (88) with an optical target image (30) in the optical path so as to convey targeting information (100, 101, 102, 104, 106, 108, 110, 1112) to a shooter or spotter viewing the optical target image (30).