Tom Abrahamsson of RapidWinder.comIt is almost never that an inventor improves on a Leica product so that it is better than the original Leica product. Tom holds that distinction with his RapidWinder for Leica M rangefinders -- a bottom mounting baseplate trigger advance. In addition Tom manufacturers other Leica accessories such as his very popular Soft Release and MiniSoftRelease shutter releases. Tom is well known as one of the true Leica rangefinder experts, even by Leica.
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That one was not made by me. Well done though - though the coast of stripping down a s-36 motor and installing what looks like a Leica MP drive in it would be substantial. It is also way to big. The two I made are less than 9mm thick.