This upgrade enables you to extend the battery tube of your SUNWAYMAN compact light (M10R, M11R, V11R) so it can run off a single AA battery. The option to utilize cheap and widely available power sources adds to the already remarkable versatility of these tactical EDC lights.
It is convenient and easy to install; it simply screws onto your battery tube. The black finish matches color options available in these models. Order today and expand your possibilities.