In the book : Kleine waffen -Bibliothek- Heft 3- MauserStreifenlader Teil 2 .
Written by H.B Lockhoven.
-model 1916/1920 this is the shortend barrel 9 mm,rear sight fixed
- model 1912/1920 this is the shortend barrel 7,63 kaliber with the normal grip.
-model 1920 export,Bolo Mauser,factory made with 100mm barrel,small grip.
From the German weaponmagazine : Visier,March 2002:
Mauser build the compact models before 1914 but massproduction and sales to Russia and China
makes the Bolo famous.
And from many articles and books I have seen :
My opinion : some one at some time linked the short ,smallframe mauser,build in 1920 .
Most of them exported to Russia/China tot Blosheviks and named them Bolo.
In the years the name "bolo" became the nickname for every short model C96
Best regards ,Fred