Here are all the handguns available in GRFS, these are brought to you by http://www.imfdb.org/wiki/Main_Page
Handguns
Chiappa Rhino 60DS
A Chiappa Rhino 60DS appears as the "Wild Boar" in the game.
Chiappa Rhino 60DS - .357 Magnum
FN FNP-45 Tactical
The FN FNP-45 Tactical appears as "45T" in the game. It is one of the sidearms of the Ghost Team in MP.
FNP-45 Tactical with Trijicon RMR red dot sight - .45 ACP
Weapon selection view.
FN Five-seveN
The FN Five-seveN is known as "5.7 USG" in the game and features a compensator. Is portrayed with a 30-round magazine, but holds only 18 bullets, probably to balance it out with the GSh-18. Can be fitted with a red dot sight, incendiary ammo, laser, but no suppressor.
Five-seveN FDE - 5.7x28mm
GSh-18
The GSh-18 is one of the Team Bodark's handguns. Upgrades include a red dot sight, suppressor, incendiary ammo, and laser sight.
GSh-18 - 9x19mm
Weapon selection view.
TDI Kard
The TDI Kard is the full-auto handgun of the Ghost Team in MP.
TDI Kard - .45 ACP
Weapon selection view.
MP-412 REX
The MP-412 REX is one of the Bodark team's handguns.
MP-412 REX - .357 Magnum
OTs-33 Pernach
The OTs-33 Pernach is known as "OTS-33" in the game.
OTs-33 Pernach - 9x18mm
Weapon selection view.
Taurus Judge
The Taurus Judge is known as "Defender" in the game.
Taurus Judge - .45LC
X26 Taser
The X26 Taser appears as an under-barrel attachment for assault rifles (but not for the so called "Personal Defense Rifles"). Both Ghosts and Bodark are using this attachment.
An X26 Tazer with safety cap on.
Weapon selection view.
X3 Taser
An X3 Taser can be seen being used during a MP match. Appears as a secondary weapon. Referred to as "Stun Gun".
X3 Taser
X3 Taser during equipment selection.