Solved
weapon sound glitch
a friend and i discovered a sound glitch when using a lmg and silencer and firing single shot rapidly. the sound stays on and can only be heard by the opposing team, it stops only on respawn. we tested this a few times on various guns in the game but the one lmg it happened every time.
that did not sovle anything
this is the real solution besides Dice / EA patching it.
don't use the 'U-100 MK5' LMG with a Silencer and on Single Shot, doing so will produce a audio glitch that does not stop and you will show up on the map for the oposing team.
