No way of knowing, since the records of many countries were lost during the war. The US alone produced MILLIONS of rifles, shotguns, pistols and machineguns.
Please explain your question better, there are many different types of "guns" that were involved in world war two.
the machine guns
1
1 1/2
sidearm and a rifle.
estimated 20 million pistols and rifles
That varied depending on the airplane, bombers could have many.
they were modifyed or put in muesuems
guns
Yes, they did have machine guns in WW2
cows with guns
Guns