How Red Dot Sights Work (What is a Collimator?)
This video, presented by Ian McCollum of Forgotten Weapons, provides an expert-level overview of how red dot sights work, tracing their lineage from early WWI collimating optics to modern LED-based systems. It details the principles behind collimation and examines key historical examples like the Nydar scope, Armson OEG, Weaver Quick Point, and Aimpoint Electronic Mark 2, highlighting their technological advancements and limitations.











