As a brief detour, I always like the scene in the movie "Battleground" (1949) when the cooks and wounded are being sent to the line, one of the men says " How does this work? I haven't fired anything but the 03." The other GI says, "This is a semi automatic, gas operated, clip fed, 30 cal...." "Look, ya aint sellin it to me, how does it work?' "Oh, you just pull this back , put in the clip and you are ready to go."