Are you suggesting that the British used ANY Submachine guns in the First World War? And more than that, that they mounted "Red Dot Sights" on them, no, not "reflector sights" but "Red dot sights" which by definition need an LED light and small battery to work. The LED that was apparently first invented in 1927 in the Soviet Union where it was never put to any practical use as it did not emit in the visual spectrum, not till 1962 an LED emitting in the visual spectrum, not till 1972 an LED of useful brightness.RC1138 said:He invented the red dot reflex sight sight by reflecting an image (the same way ALL reflex sights work, including the classic M68 Aimpoint, I might add, including holographic sights such as an EoTech 552) onto a sight objective. This technology exist, in a WORKABLE, WEAPONS MOUNTABLE FORM, by 1909 and was used by British troops in WWI. Usually mounted on machine guns but there was limited use on sub-machine guns as well.
Red Dot Sight is a type of reflector sight in the same sense a Ford GT is a type of Car, but just because the car existed in 1909 doesn't mean the Ford GT existed and was used in 1909.