MK 47 MUTANT & Laser sight: dev videos
Check out the previews of the upcoming novelties of the future PC #21 Update. The new assault rifle and the brand new type of attachments - the laser sight which would help you when firing from your hip.
Unfortunately both of the new ingame items are pretty doubtable - why would you need a laser sight if you have a crosshair and a rifle without rapid fire mode. Both of them wouldn't be popular among both pro & casual players.