"Swiss Magazine Loading Rifles, 1869 to 1958 by Joe Poyer is the newest book in the "For Collectors Only" series. It describes, on a part-by-part basis, all the models of both the Vetterli and Schmidt-Rubin rifles including infantry rifles, short (Stutzer) rifles, carbines and cadet models. All markings and codes are explained and tied to models and serial number ranges. Also included are exploded views, ammunition details, assemble/disassembly instructions, maintenance and trouble shooting." - Publisher

If you have looked for any printed material on your Karabiner 31 (K-31) you have probably found that the landscape is pretty barren. North Cape Publications has recently published a detailed collectors' guide written by Joe Poyer named For Collector's Only: Swiss Magazine Loading Rifles, 1869 to 1958.  I have looked for other available books (printed in English) on the same subject and have not found any to date.

Following the established "For Collector's Only" format and systematic approach of presenting information on collecting mil-surp firearms, Joe's new book includes history of the development as well as a detailed, part-by-part analysis of the famous rifles and carbines. Starting with Friedich Vetterli's design of one of the very first military bolt action repeaters and culminating with the original designs of  Rudolf Schmidt's (Eduard Rubin actually designed the cartridge) straight-pull action rifles and carbines. It also presents extensive information on cartouche and marking identification so that you will be able to answer "when and where your rifle or carbine was made". Also includes detailed parts diagrams and disassembly instructions which is unusual for a "For Collector's Only"  series book.

A good book for the beginning collector of Swiss rifles and carbines.

Paperback: 234 pages
Publisher: North Cape Publications, Inc.
ISBN: 1882391322

This book can be purchased for $19.95 + S&H at - 

http://www.northcapepubs.com/

List of Chapters and Appendices

1. Vettereli System Description;
2. The Schmidt-Rubin System;
3. The Schmidt-Rubin: part by part;
4. Sniper Rifles; 
5. Markings and Serial Numbers;
6. Bayonets;
7. Appendix A: Exploded Views;
8. Appendix B: Disassembly and Reassembly;
9. Appendix C: Trouble Shooting the Vetterli and Schmidt Rifles ;
10. Appendix D: Glossary;
11. Appendix E: Bibliography