SCARFACE -- "LITTLE FRIEND"

The Hollywood star,Al Pacino who played Tony Montana in the gangster movie, was a
method actor and insisted his weapon was the correct weight – so he used a
real M-16A1 machine gun.
In the film, he said the line "say hello to my little friend" before
killing four gunmen whith it.

At the time the weapon was a live firing fully automatic machine gun and grenade launcher. It was also wielded by Arnold Schwarzenegger in the 1987 film Predator.

Following the death of actor Brandon Lee, who was accidentally shot by a live round fired from a pistol on a film set in 1993, the US banned automatic weapons in filming.