On PC many of us PvP players are using 3rd party custom crosshairs to make up for the ****ty in game crosshair, which with LMGs is off centre.... Great Job Devs!
Some use Desktop Background, I use Reshade, other's use other programs.
Reshade is free and u just install it to ur games directory, not all downloads contain the T-crosshair, if u need that u may contact me on Cryptonomous#0744 and I'll send u it.