G.I. Joe: The Rise of Cobra

The weapons seen in this upcoming movie are:

FN FiveseveN

Used by SnakeEyes.

FN Five-SeveN (Original Model), 5.7x28mm. This model is no longer produced.

Used by Heavy Duty.

GE M134 - 7.62x51mm.

400px

Used by The Baroness in the trailer.

H&K MP7A1 4.6x30mm with Zeiss Z-Point sight. This MP7 shown in SMG configuration.

Held by Duke in the trailer

I think it looks more like a HK416.

Colt M4A1 Carbine with M68 Aimpoint scope and RIS foregrip 5.56mm

in Tactical configuration

Fabrique Nationale F2000 5.56x45mm NATO

Steyr AUG A3 5.56mm with Surefire M900 weaponlight foregrip and EOTech red dot sight