A tactical-gear-rail connector-adapter system apparatus and method utilizing the Picatinny-rail standard, allowing precise aligned removable interconnection of a variety of tactical gear or auxiliary equipment such as telescopic sights, night vision devices, reflex sights, laser aiming modules, rangefinders, tactical lights, cameras, fore-grips, bipods, and bayonets, in field-interchangeable configurations, to small-arms rifles and pistols and to non-firearm tactical gear, by providing a greater amount of interconnection options.