35:06

How One Jeweler's 'MAD' Scope Lens Trick Let Snipers See Through Fog

35:39

How One Civilian's "IMPOSSIBLE" Design Created America's Fastest Machine Gun

48:08

How to Defeat Thermal Optics on Any Budget | Hide or Die?

33:54

How One Cook's "INSANE" Idea Stopped U-Boats From Detecting Convoys

49:52

How a Simple Gun-Grinding Trick Gave American Snipers a Decisive Advantage in World War II