What is the most commonly used assault rifle in the world?

Answer 1

British/Canadian - Lee Enfield No4 Mk I (T)

Australia - Lee Enfield No I Mk III

American - Springfield M1903A4

German - Mauser Kar 98

Japanese - Arisaka types 38 and 99 (6.5mm and 7.7mm respectively)

Russia - Mosin-Nagand M1891/30

There were others, but those are the most common.

Answer 2

The most commonly-found sniper rifle out there is probably the Russian SVD-1 Dragunov. I had to laugh when the first ones of these got into the US Army's hands. All the experts were running around laughing that the Soviets weren't issuing "match grade" rifles to their snipers. Well gee guys, if the Soviets were to issue match grade rifles to their snipers it wouldn't matter--they aren't good enough shots to be able to take advantage of a rifle that can put a box of ammo through one hole from 500 meters. Dragunovs are plenty good for the shooters who use them.

Answer 3

It would certainly be some variant of the Kalashnikov AK-47. Tentatively, I'd be inclined to say the Chinese Type 56 would probably be the most common variant. The actual Soviet/Russian AKs aren't as widespread as some would tend to believe - although it wasn't always the rule, the Soviet Union tended not to directly supply countries about to get into a confrontation with major NATO powers, but would instead "authorise" other Iron Curtain countries to sell them weapons, so you tended to see more Romanian, Hungarian, Polish, East German, etc. rifles supplied to these countries than Soviet made rifles.