Black Hawk Down
Green Zone
World War Z
Mission Impossible (the more recent films, not sure about the older ones)
Blood Diamond
Three Kings
The Mummy
The Pacific (tv series)
I know these use airsoft rifs, loads & loads of films use them.
It's a lot easier when filming to import/export airsoft than blank firers or the real deal.
Some countries like Morocco have very strict laws so deactivated airsoft rifs are often brought in.
They're also cheaper and safer if say for example;
to fill the holster of an extra who may just be milling around in the background looking busy doing nothing but filling a scene.
I know these films use them because my brothers and I own some rifs used in them...