SmythBusters: Mounting Optics on Handguards
This video from SmythBusters investigates the common practice of mounting optics on AR-15 handguards, including bridging the receiver and handguard. Steve and Caleb from Brownells use red dot sights and LPVOs to demonstrate how this mounting method impacts accuracy, group size, and zero retention. They conduct drop tests to show zero shift and compare the performance of optics mounted on the handguard versus the receiver. The video concludes by debunking this internet myth and emphasizing the importance of proper optic mounting for reliable firearm performance.










