The grendel when put in select fire mode with a silencer equiped does not silence, it works in burst but as soon as you switch to single shot the silencer stops working.

still... effed... up...

I waited 2 years for BIS to fix ATV's flipping over at random points in any game, killing you instantly, sometimes when a respawn wasn't available...and AI shooting you through walls...and stupidly horrible optimization...

Get some perspective (and patience) people, this is not the worst case of bugs in gaming history. It will be fixed.