Pacificcrossroads Models - A little note about the models and names. The soldier was holding a Zhong-Zheng Shi (or 24 Shi) rifle. It's a copy of Mauser Standard Modell M1933 Short Rifle.
STA M 1922 / MAS M1924 - Modern Firearms
FN Model 24 and Model 30 - Wikipedia
FM 24/29 light machine gun - Wikipedia
Venezuelan Mauser FN 24/30 1924 or 1930 | Gunboards Forums
Venezuelan FN 1930 Mauser: A South American Beauty - YouTube