 The Gen 3, light, foldable, and effective. The Gen 3 version comes with some new details. You don't have to detach your favorite optics anymore to fold it right in half, and it folds quickly and easily, and just as quickly and easily deploys as well. There's also an upgraded action. The Gen 3 version of the Sub 2K features a redesigned operating handle for added comfort, lightened action for easy racking, ambidextrous bolt hold open, all providing improved manipulation.