Thread: Single Point sight

I came into possession of a Single Point sight recently and have been trying to find out more about them. I've read that they were used by US special forces in a prominent raid during the cold War, that British squaddies weren't issued them but some were seen with them on weapons while in Northern Ireland, and that Popular Mechanics did an article on them back in the day. They have a fibre optic dot that you see with the eye you look through it with, but can't seen anything else, your other eye stays open and your brain superimposes what both eyes see so it looks like the dot is where where the rifle is pointing. Any know much more about them?