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How Red Dot Sights Work (What is a Collimator?) (Ad-free) (Patreon)

Published:
2026-01-16 12:00:03
Imported:
2026-06
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How Red Dot Sights Work (What is a Collimator?) (Ad-free)

The best firearms reference books: https://www.headstamppublishing.com A whole lot of people have used red dot sights, but how many actually understand how they work? Let's see if we can fix that today... http://www.patreon.com/ForgottenWeapons http://www.floatplane.com/channel/ForgottenWeapons Cool Forgotten Weapons merch! http://shop.forgottenweapons.com

Comments

GaryG

Very kewl seeing the old technologies. 🤙. Never realized the technology was used in WWI.

TOD LANE

good for older eyes

Hansmeister

I got to shoot a shotgun with an OEG at thrown clay pigeons a few years ago. An odd setup but it did kind of work.

Guido Schriewer

don't like reddots much. ok the bat life is freaking amazing still dislike to use them. man that shotgun is very cool!

Jason Dusek

The light is exiting the window in parallel rays. How is it that it doesn't fill the pupil (about 2.5mm diameter) or the NVG lense? It stands to reason that a 20mm square (like an ACRO) projecting collimated light from all points on the lense would be a 20mm red square going backwards in space.

JFLGA

I've tried all of those! I had a Armson OEG, which i could never get zeroed, on a FAL , a Weaver Quik Point on a Rem. 870, and an Aimpoint Mk Ii with the 3x attachment.