If I played bo2, shotguns

Better off using either a silencer or extended mags on hc setups, I like extended mags so I dont have to use scavenger/pick up a gun that I dislike. And depending on the play style of the lobby a launcher might work better as a secondary (gives enemy campers a nice campfire for when they come back to that spot). Black ops 1 taught me to run setups that wont let campers determine the pace of the game, by running streaks that flushed them out (spy plane, napalm, mortars). Mw3 comes along and camping results in death and then rage deaths, I became something that campers and parties hated/feared. Just by running support.