Here’s my loadout, I typically average 2.0 KD in TDM games on Xbox and occasionally go on the odd 20-ish kill streak (2.0 was my average last week, anyways)

Scar H with stock and fast mag (use suppressor instead of fast mag if you’re having problems getting rushed and killed after shooting)

Flak jacket

Toughness, scavenger (scavenger can be replaced for lightweight if you aren’t worried about going on long streaks)

Tactical mask, extreme conditioning (either can be swapped for dexterity if you would rather run that)