Depends on map and game mode for me
Something like TDM I use the MCW or BAS-P depending on the size of the map. BAS-P for longer range. I use the Assasin Vest in that case
Something like DOM/Hardpoint is use the MCW or Rival 9. I use the engineer vest with tac mask + EOD + ACS or demo vest with 2 letals which depend on map (claymore vs semtex for exampe or drill charge)
Something like KC is use Rival 9 and combat knife with the coms vest
On maps like wasteland, estate, rundown I switch to the KATT-AMR sniper
All my classes use the scavenger gloves
Mostly use the ACS or trophy system
I run UAV, Counter UAV, Sentry for KS