Kari: The Type "G" is described on page 50 of Jon Speed's "Archive" book. Basically it is any Mauser Sporter with a 600mm barrel length with a full length stock to the end of the barrel. ( If it is a Kurz action, the barrel length would be 550mm ) The stock configuration can be a Type S style or a Type M style. The butterknife bolt handle was available as an option on all Mauser sporters, so it does not just identify a Type M. There are a number of Type G's shown in the "Archive" book. Very few were made.