My classes.
Laser Tag
M16A4 w/ Red Dot Sight
Stun x 1
Gold Desert Eagle
Frag x 3
Stopping Power
Dead Silence/Martyrdom
Your standard setup, mostly used on maps like Strike or Overgrown if I'm not sniping.
SMGLOLL
Skorpion w/ Silencer
Stun x 1
Gold Desert Eagle
Bandolier
Stopping Power
Extreme Conditioning/Dead Silence
I use my second slot for SMGs, I'm working on completing the Skorpion challenge at the moment. The Skorpion is decent, going through the challenges with an Uzi is pretty annoying. Every other Sub is great.
Hannah Montana (Sleepover)
M60E4 w/ Red Dot Sight
Flash x 1
Desert Eagle
Frag x 3/C4
Sleight of Hand/Juggernaut
Martyrdom/Steady Aim
LMG slot, named 'Hannah Montana (Sleepover). Since the only good LMG is the RPD, I now have to use this in it's place. It's more of an infantry setup, great on maps like Bog. C4 is useful in buildings, Sleight of Hand is only good on an LMG setup, and the last two are obvious.
Shotty
M1014 w/ No Attachments
Smoke x 1
Desert Eagle
Bomb Squad/C4
Stopping Power
Extreme Conditioning/Martyrdom
Exclusively used on maps like Shipment or Vacant. Also useful on sniping maps. Bomb Squad to detect claymores and C4 around corners. Smoke is useful when they have you at long range with a sub. Extreme Conditioning for running away and Martyrdom for closed quarters.
Campfire Song
Barrett .50cal w/ No Attachments
Stun x 1
MP5 w/ Silencer
Claymore x 2
Overkill
Deep Impact/Iron Lungs
Sniping setup. Not much to say other than Overkill. I decided to go with an MP5 as a second weapon because some people chose not to snipe on maps like Overgrown. Just to be safe.