After the black version, Funleader also released a silver version of the lens carrier for Leica M-series cameras (international shipping available).
Additional information from the product listing/previous blog post:
“Lens Carrier for Leica M-Series Cameras is designed for Leica M-system, especially for Leica film cameras. With this lens carrier, photographers only need a camera and two lenses to take great pictures, a clever way to have a second lens ready without having to take an extra camera case along. The carrier is screwed into the tripod bushing, so the second lens serves as a handle or even as a miniature tripod. This will provide greater stability. Still, changing the film is no problem, as the baseplate remains freely accessible.”
Leica used to have a similar product that is now discontinued.
The Contac G45 and Contax G35 conversion Helicoid kits by Funleader are still in stock (limited availability):
Funleader has several other products for Leica cameras:
Funleader announced a new lens carrier for Leica M-series cameras ($39)