My Nuke Gear involves:
Primary: Scar H with "Fall" and Granade launcher
Secondary: Rpg x2
Perks: Scavenger pro, Danger close pro and Ninja Pro
Equiptment: Claymore and Flash Granades
Use Scar H because it is powerfull without having FMJ.
I use Danger close Because The Claymore = 1 Kill, The Tubes = 2 Kills and The 2 Rpgs = 2 kills so thats 5 kills and if you Scavenge you get the Tubes, Rpg and claymores back.
If you get to a high place with only 1 or 2 doors you can get Harrier ( 7 Streak ) Hide and it will kill people and then Chopper Gunner ( 11 Streak ) wait for the harrier to finish ( your still hiding ) then open Chopper Gunner and Shoot away and thats how you get a Nuke.
Scavenger - Lets you pick up bags of ammo left by dead foes, PRO - More ammo at start.
Danger close - INcrease explosive's damage, PRO - More damage from your air support.
Ninja - Invisable to heartbeat sensors, PRO - Silent foot steps ( So you can hear enimies )