Weapons

Here is a List of weapons that have been confirmed for Black Ops 2:

Primary Weapons

Assault rifles:
Type 25 - fast rate of fire, and moderate recoil.
M8A1 - 4 burst assault rifle
SA-58 - Semi auto american version of FAL.
SIG556 - 3 burst rifle with high damage like the M16/Type 95 from previous games.
SCAR-H - supposed to have above average damage and range
AN-94 - A variant of the AK47. First 2 bullets, fire at a very fast rate.
SMR - semi auto. Highest damage of ARs. Probably like M14.
TAR21 - recently confirmed

Shotguns:
M1216
Saiga-12
R-870 MCS

LMGs:
LSAT
QBB LSW
Mk 48

Sniper Rifles:
DSR 50 - german bolt action sniper rifle. OSOKs stomach and below, mag size of 5.
SVU-AS - bullpup version of SVD w/ mag size of 12. Low recoil+ acog zoom. Damage unknown. Could be like the M21 in power (OSOK to head and neck).
Ballista - iron sights is a separate attachment. In game description says it OSOKS to the chest and up

SMGs:
MP7
Chicom CQB
PDW-57 - variant of the p90. Has 50 rounds like the original.
Skorpion EVO III - newer version of Skorpion?
MSMC - indian variant of the uzi
Vector - recently confirmed

Primary Attachments

Reflex sight
ACOG sight
Target Finder -Paints red squares around hostiles.
Hybrid Optic
Suppressor
Fast Mag -Faster reloading of mags.sleight of hand.
Fore Grip - decrease recoil on primary weapons
Laser Sight - tightens hip fire. Works like Steady Aim
Adjustable Stock - increase movement speed while adsing. aka Stalker from MW3.?
Quickdraw -faster ADS?
Millimetre Scanner -see through some solid surfaces + smoke
Ballistic UAV - reduces idle sway
long barrel- for shotguns only.. Gives more range
Grenade Launcher
Select Fire Mode - switch fire between auto, burst, and semi. Via wildcard.
FMJ Rounds - Deep impact/aka better penet through surfaces and increases damage to vehicles(and possibly kill streaks)
Extended Clip
Rapid Fire

Secondary Weapons

Launchers:
FHJ-18 AA (Vehicle lock-on, two rockets)
RPG
SMAW

Pistols:
KAP-40
Tac-45
Executioner
B23R 

Equipment

Lethal Slot:
Grenade
Semtex
Combat axe
Claymore
C4
Bouncing Betty

Tactical slot:
Black Hat PDA (Get close to enemy equipment and point this data pad at it to hack it and turn it against enemies. Takes ages to hack though!)
Smoke grenade
Sensor grenade
Flashbang
Concussion grenade
Sensor grenade
Shock charge (a throwable stick that emits an electric shock across a surface, rooting targets to the spot)
Tactical Insertion