the official list of guns!!!!!

Assault rifles
AK-47
Steyr AUG A1 (MP)
CAR-15 Commando (MP)
G11 (confirmed from GKnova6 document)
M16A1 (MP)
L85/SA80
FAMAS (MP)

Sniper rifles
L96AW/AWM (MP)
Dragunov (MP)

Submachine guns
MP5k (MP)
MAC-10
Mini Uzi
Skorpion
AK47u
MP5

Light Machine Guns
RPK
M60

Shotguns
Franchi SPAS-12

Bows
Crossbow (MP)

Pistols
M1911
.357 Magnum
Python Snub Nose (MP)

Launchers
M202A1 “Grim Reaper” Rocket Launcher
RPG-7 (MP)
China Lake Pump Action Grenade Launcher (confirmed from GKnova6 document)

Flamethrowers
Flamethrower (confirmed from GKnova6 document)

Attachments
Swarovski Scope
Suppressor
China Lake GL Attachment
Incendiary ‘Dragon’s Breath’ Shotgun Rounds
Explosive Tipped Crossbow Bolts

Grenades
M67 Frag Grenage (MP)
Semtex/Sticky Grenade (MP)
Special grenades
Smoke Grenade (MP)
Stun/Flash Grenades (MP)

Other
C4
Knife
Ballistic Knife (MP)
Camera Spike (MP)
Note: All weapons, unless specified, are assumed to be in Campaign only. When/if any items are confirmed to be multiplayer weapons they will be marked (MP).

G11 is probably going to be the definition of sure evil..

‘Dragon’s Breath’ shells should be fun. I don't think they used those in any war or operations in real life, though...