Funleader has the Contax G45 f/2 lens for Leica M-mount currently back in stock (limited stock). The Contac G45 and Contax G35 conversion Helicoid kits are also in stock:
Leica M9 + Contax G 45mm f/2 lens (converted by Funleader) sample photos
Converted Contax G 45mm f/2 lens for Leica M-mount by Funleader
The Funleader Contax G35 f/2 to Leica M Conversion Helicoid Kit is back in stock
Funleader has several other products for Leica cameras:
All Funleader products are currently 10% off for the holidays: