The following guns can be seen in the upcoming video game:
Handguns
Beretta M9
MP412 REX
Colt M1911
MP-433 Grach
Submachine Guns
IMI Uzi
M1928 Thompson
M1928A1 Thompson, .45 ACP
PP-2000
Heckler & Koch UMP45
Heckler & Koch UMP .45 ACP
Assault Rifles
9A-91
Heckler & Koch XM8
Heckler & Koch XM8, 5.56mm
Heckler & Koch 416
Heckler & Koch HK416, 5.56x45mm NATO
AEK-971
AN-94
AKS-74U
AKS-74
Steyr AUG A3
FN F2000 Tactical
FN F2000 Tactical, 5.56x45mm NATO
FN SCAR-L
Heckler & Koch XM8 Compact
Heckler & Koch XM8 Compact, 5.56x45mm
Sniper Rifles
QBU-88
SV-98
SV-98, 7.62x54R/7.62x51mm NATO
VSS Vintorez
M24
M24, 7.62x51mm NATO, .300 Winchester Magnum
Barrett M95
GOL
SVU
Shotguns
Franchi SPAS-12
Franchi SPAS-12, 12 Gauge
NeoStead 2000
Neostead Shotgun, 12 Gauge
Saiga-12
TOZ-194
Machine Guns
M249 SAW Paratrooper
PKM
Heckler & Koch MG36
Heckler & Koch MG36, 5.56x45mm
QJY-88
M60
Launchers
RPG-7
M136 AT4
Carl Gustav M2
Heavy Machine Guns
XM312
M134 Minigun
Dillon Aero M134 with flash suppressor - 7.62x51mm. These are new model M134 Miniguns or just updated GE Miniguns which are usually seen with a different spade grip mount that were used during the Vietnam War.