Mine is the G3. I equip a silencer and use the Bandolier, Stopping Power and Deep Impact perks. My second favoriite is the -47 with either the ACOG scope or a silencer with Bandolier, 2x Tap, and Stopping Power. Sometimes I use the Deep Impact perk, too.

My Fav of right now, is the following.

Primary Weapon: MP5

Secondary Weapon:Any hand gun
Special Grenades: Stun Grenade
Perk 1: 3x Special Grenades

Perk 2: Stopping power or Radar Jammer.

Perk 3: Deep impact or Extreme Conditioning

My favorite is the mp5 with a silencer, desert eagle, claymores, stopping power, and steady aim. Also the m16 with red dot scope claymores stopping power and steady aim and desert eagle

Yeah I got to say the G3 w/ stopping power, deep impact and bandolier.

2nd fav is the ak-47 with a dot, uav jammer, and steady aim or deep impact. with bandolier or claymizores as my first perk depending on the situation.

hate the mp5 though, doesnt suit my play style.