Here you have three guns drawings when I was younger!!
-The first drawing is the M40A5 sniper gun without his peephole who was use it in Vietnam war, this sniper was created by EEUU.
-The second drawing is the MP7 a very famous SMG. This gun was designed in 1990 by Heckler & Koch, Germany and was used in Afganistan and Irak war.
-The last drawins is the Type 88 LMG, this machine gun was designed by Mikhail Kalashnikov in 1980, China. Was used in a lot of wars.
If you like it comment and I will bring you more!! Thaanks!!