Smyth Buster: Can You Mount an Optic on an AR-15 Handguard?
This video debunks the myth that you cannot mount an optic on an AR-15 handguard. Brownells Gun Techs Caleb and Steve explain that while it's a common piece of advice, the reality is more nuanced. They discuss how handguard flex can affect Point of Impact (POI) versus Point of Aim (POA) if an optic is mounted on it. The degree of flex, and thus the potential POI shift, depends heavily on the handguard's stability. Sturdy handguards from manufacturers like Geissele and Midwest Industries, or monolithic uppers, offer a more stable platform. Conversely, cheap, two-piece drop-in handguards are considered too unstable. The video concludes that mounting an optic on a handguard can work in many circumstances, with the issues being minimal unless engaging targets at very long ranges.









