All books have errors in them, including the Ruth books. We extend our knowledge as new, or unknown before, information is found. That's my main reason for having a large M1carbine library. I even have the Larsen book, because it shows so many repo parts. The Riesch book is a nice, quick, reference for the price. Extending your library can cost as much or more then the cost of purchasing a carbine.
My first Ruth book, is from 1979.
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