According BF3blog this is the complete list of BF3 weapons per DICE.

Complete list of Battlefield 3 weapons


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On August 16th, 2011 in News

With the Gamescom multiplayer trailer, and EA press event, DICE has released a list of all the weapons and equipment that will be available in Battlefield 3. Among other things, it is confirmed that portable anti-air launchers will be available, as well as claymore mines. Without further ado, here is the full list of official, confirmed Battlefield 3 weapons:
Assault rifles

• M16A4
• M416
• G3
• Ak74M
• AN94
• KH2002
• AEK971
• F2000
• ASVAL

Carbines

• M4A1
• G36C
• AKS74U
• SCAR H
• A-91
• SG553LB

Light machine guns

• M249
• M60
• M27 IAR
• M40
• RPK
• Pecheneg
• Type88

Sniper rifles

• MK11
• SVD
• SV98
• M98B
• M40A5
• M82A3
• M39
• SKS

Sub Machine guns

• P90
• P90TR
• MP7
• UMP-45
• PDR
• PP2000

Shotguns

• 870 MCS
• M1014
• USAS-12
• Saiga 20K
• DAO-12

Rocket launchers

• AT4
• SMAW
• RPG-7
• Javelin
• FIM-92 Stinger
• SA-18 IGLA

Pistols

• M9
• M93R
• MP443
• MP412
• Glock 17
• Glock 18
• M1911
• T44

Misc

• M67 Hand grenades
• M18 Smoke grenades
• C4 explosives
• M15 Anti tank mine
• Claymore mine
• 60MM Mortar
• M320 40mm launcher with grenades/smoke/shotgun
• M26 MASS with shotgun/Flechettes/frag round/solid slugs

not really spoiled for choice, but more would always be better

60MM Mortar, sounds interesting but i see a lot of TK'ing from first time users.

Originally Posted by killingseed

Commander's artillery pieces, sounds interesting but i see a lot of TK'ing from first time users.

FIFY