Absolute Co-witness vs. Lower 1/3 Sights
This video features John Lovell explaining the concepts of absolute co-witness versus lower 1/3 co-witness for rifle optics. He demonstrates this on a Daniel Defense Mk18 build equipped with an Aimpoint T2 red dot sight, Daniel Defense micro mount, Magpul Pro iron sights, a Blue Force Gear Vickers sling, a Surefire Mini Scout light, and a Gemtech suppressor. The discussion focuses on how different optic mounting configurations affect the user's sight picture with iron sights.













