This paper model is a StuG III Ausf. G, a variant of the Sturmgeschütz III (StuG III) assault gun, which was Germany's most produced armoured fighting vehicle during World War II, the papercraft is created by ABC, and the scale is in 1:35.
There are other two versions on the site: Sturmgeschütz III Ausf. G Assault Gun Paper Model Ver.1 and Ver.2; also several StuG III paper models available.
You can download this vehicle paper model template here: WWII StuG III Ausf. G Armoured Fighting Vehicle Paper Model Ver.3 Free Download [Box] [Gavitex]