The very best book you can find:

Ñàìîçàðÿäíûå è àâòîìàòè÷åñêèå âèíòîâêè Òîêàðåâà" (èçä. 2-å, äîï.è èñïð.)

The only problem: Some of the photos have English description, but the the book is in Russianicon.

Shippment to Germanyicon was no problem.