Most weapons come equipped with a secondary fire mode, increasing your carry load from two to a virtual four. (tomsguide.com)
I tell anyone who has my camera that it's on rapid fire mode so hold the button for a second for each shot and capture a few each time. (kristendukephotography.com)
However, a lot of players ignore it due to its lack of a full - automatic fire mode. (pcgamesn.com)