The bolt action L118A fires slowly and deals massive damage. Designed for snipers that shoot to kill on first contact, taking the time to line up a perfect shot.
Uh the perk setup for this is HORRRRIBLE... Sitrep for a sniper? Really?
Use
1st: Sleight of Hand
2nd: Assassain or Quickdraw
3rd: Marksman
For secondary weapon use the MP9 Machine Pistol(The one from secondary weapons, not to be confused with MP7), It is decently accurate and doesn't take many shots to kill and makes you lighter so you move faster because you're not carrying TWO primary weapons (each gun has a different weight and will affect your movement speed)