If you could equip the ideal small arms of an Infantry Division in 1940, what weapons would you pick and why? Small arms generally includes pistols, rifles, sub-machine guns, machine guns and anti-tank weapons. I'll also include mortars or other small scale infantry support weapons.
Consideration should mostly be given to producing a high quality division. However bonus points if you come up with an alternate list which primarily considers it from a cost-benefit point of view.