My 2 favourite classes:-
MK14 Red dot + Silencer
Stinger or RPG
C4 and Flash grenade
Recon pro, Assassin pro, Marksman pro
Predator, Reaper and Pavelow
Model1887 with damage
MP9 with Silencer
C4 + Portable radar
Sleight of hand pro, Hardline pro, Stalker pro
Specialist. Assassin pro, Dead silence pro, Sitrep pro
That's because he doesn't want to use "OP" weapons. I just thought he might want a load out that would challenge anyone to get a positive K/D ratio. Personally I would never use this set up because it only limits you with three ways to kill. Riot bash, Stab, or Knife throw. O' I forgot Point Streak. Better be.. Assault drone, Pave low, Osprey. That'll do it.
When Sleight of Hand comes into play, you're better off using Grip for the SPAS-12; due to the recent update this'll actually increase fire-rate. Same logic applies to the KSG-12, also a formiddable weapon by itself.
Speaking of shotgun classes, here's mine:
Primary:Suppressed USAS-12 (Damage)
Equipment:Throwing Knife and Portable Radar
Perks:Sleight of Hand, Assassin and Steady Aim (All Pro)
Go nuts. :3
For rushing and getting into their spawn or camp area, or for just working the map on medium to small maps.
UMP 45 rapid fire, range.
Smoke (Excellent for getting you to a spot, getting you out of a bad spot, or just as a distraction, plus it can help your team).
Slight of Hand, Quick Draw, Steady Aim
Specialist: Marathon Pro, Assasin, Scavenger
For sniping and it can do snipe rushing, or just moving around the map when needed.
MSR, or L118. Extended mags, stability.
.44 Magnum akimbo
Portable Radar (nothing else helps me as much as a sniper, especially when you're trying to rush with a sniper, and again it helps your team)
SOH, Quickdraw, Steady Aim
Specialist: Assasin, Hardline, Marksman
Feel free to look at my elite for others, I only have one assault class but I'm really enjoying it too, perhaps that one is more up your alley.
Are you looking for good classes that don't include the MP7 or ACR, or are you looking for troll classes?
If you mean good classes: MK14 is beast, UMP45 rapid fire is pretty fun (but not easy) to use, any pump action shotgun (model, spas, ksg).
If you mean troll classes, try anything with a thermal scope, or a silenced LMG or a silenced pump action shotgun =P you won't do too well (probably) but it's a lot of fun, especially if you have a full party using the same ridiculous setup.
G36C RDS+Silencer (Attachments)
One of my favorite classes at the moment, the G36 does the same damage as most assault rifles but fires faster. Has a bit more recoil to deal with, but since its strictly vertical it mostly just leads to headshots.
The Scar and AK47 are two other great guns if you haven't tested them out as well. I use Ext Mags on the AK and Ext Mags+Silencer on the Scar
I recommend giving the AK another chance. Don't use a silencer on it though. Even though the majority of the people I see using it have a silencer on it, I find it ruins the guns effectiveness. Use either no attachments or extended mags and on a map where you run into a lot of short to medium range gun fights (hardhat comes to mind for me) the gun dominates with kick or even impact. Its got a 49 damage before the range drop off, so you 2 shot a lot of guys with it since you almost never run into anybody at full health. Throw a concussion or flashbang into a room and you can clear it out pretty quick with the AK.
AK47+ Ext Mags (Kick)
Scav Pro/Quickdraw Pro/Stalker Pro
Definitely a solid class set up if you want to give it a shot.
2 of my favorites ak47 kick prof and silencer
perks: scavenger, quick draw, stalker
specialist sp: soh, assassin, blindeye
mp5 kick prof w/ silencer or extended mags
perks: scavenger, quickdraw, dead slience
specialist sp: extreme conditioning, soh/blast shield, blind eye