Walther P99 Edit
The Walther P99 serves as the standard sidearm of NATO forces. It's in game designation is P07, and it's chambered for 9x21mm, the same as the OPFOR pistol.
MP-443 Grach Edit
The MP-443 Grach appears as the OPFOR pistol under the fictional classification of Rook 40. Like the P99, it is chambered in 9x21mm, and their magazines are interchangable.
Submachine Guns Edit
CZ SCORPION EVO 3 A1 Edit
The CZ SCORPION EVO 3 A1 is used by NATO combat divers.
TDI Vector Edit
The TDI Vector was spotted in a gameplay screenshot during Gamescom 2012.
Benelli M4 Super 90 Edit
The Benelli M4 Super 90 appears as the "M4 SASS".
Kel-Tec KSG Edit
The Kel-Tec KSG is a confirmed weapon to be featured in the game, and can be fitted with various accessories.
Assault Rifles Edit
FN F2000 Tactical Edit
A fictional variant of the FN F2000 Tactical is used by NATO soldiers and appears as the "Mk 20". It features a tan body scheme and Monolith Arms rail system, and can be customized with a variety of attachments. A unique grenade launcher available only for the weapon and called the "Mk 20GL", is presumably based on the FN GL-1.
DIO KH2002 Sama Edit
Iranian soldiers are seen with a fictional variant of the DIO KH2002 Sama, known in game as the Katiba 6.5mm. It fires caseless 6.5mm rounds. The front sight has been removed and the carrying handle has been lowered and modified with a rail system. Like the other assault rifles, the KH2002 can be customized with various attachments.
IMI Tavor TAR-21 Edit
In pre-Alpha footage, Iranian soldiers we're seen using a variety of Tavor TAR-21s as their standard issue weapon; there is a rumor that presumably obtaining it from the Israelis after conquering Israel. With the release of the Alpha, the standard issue weapon of the Iranian soldiers was changed to the Iranian-made DIO KH2002 Sama, with the model of the TAR-21 changed to the Airsoft Ares Tavor TAR-21 model (distinguished by the small rail on-top and sand color scheme), also using the in-game designation "TRG-21".
Kel-Tec RFB Carbine Edit
The Kel-Tec RFB Carbine, appears as the SDAR 5.56mm, is used by NATO and Iranian combat divers in-game and appears to be modified into a fictional underwater weapon, but remains visually identical.
"MX 6.5mm" Edit
U.S. Army soldiers use a fictional assault rifle (designed by real-life CMMG, Inc.), that has design elements borrowed from the Remington ACR and Robinson Armament XCR. Compact and light machine gun variants are also available. By default, it fires caseless 6.5mm ammunition, although it could possibly fire traditional cased ammunition, due to the presence of an ejection port on the right-hand side of the weapon.
Sniper Rifles Edit
Gepard GM6 Lynx Edit
The GM6 Lynx anti-material rifle is shown during the Arma 3 GamesCom presentation.
Mark 14 Mod 0 Enhanced Battle Rifle Edit
The Mk 14 Mod 0 EBR is seen used by NATO soldiers.
Machine Guns Edit
Knight's Armament Company Light Machine Gun Edit
The KAC LMG, appearing as the Mk200 6.5mm, is one of the machine guns available to OPFOR in-game. It features a Magpul UBR stock and can be fitted with various accessories. It fires 6.5mm caseless ammunition.
Heckler & Koch XM25 Edit
The H&K XM25 is a confirmed weapon to be featured in the game.
Metal Storm 3GL Edit
The Metal Storm 3GL is the standard underbarrel launcher of NATO forces.
The NLAW (British designation for the MBT LAW) is the standard launcher of NATO troops. Currently, in the Alpha build, anti-tank launchers can also be used as guided missile launchers. This will be remedied before finalization.
The RPG-32 appears as the RPG-42 and is the standard OPFOR launcher.
Mounted Weapons Edit
Browning M2 Heavy Barrel Edit
The Browning M2HB is seen mounted on the Unmanned Ground Vehicle (UGV) used by the NATO faction in-game, alongside a possibly unknown model of a grenade launcher. The M2HB is also mounted on the "Panther" Armored Personnel Carrier (derived from the Namer APC), as well as the armed variant of the "Hunter" light armored vehicle (derived from the Oshkosh M-ATV), both used by the Iranian Armed Forces faction.
Dillon Aero M134 Minigun Edit
A possibly DE M134 Minigun is seen mounted on the "AH-9" attack helicopter (derived from the AH-6 Little Bird) used by the NATO faction in-game.
Heckler & Koch GMGEdit
Strider ARCs that come mounted with turrets use the H&K GMG.
General Dynamics GAU-19/A Edit
The GD GAU-19/A is seen mounted on the "Mi-48 Kajman" attack helicopter (derived from the Mi-28 "Havoc") used by the Iranian Armed Forces faction in-game. It is unclear why the GAU-19/A is featured as the main armament of the Mi-48 instead of the Shipunov 2A42, although this reason could be for ArmA III's futuristic background.
General Dynamics GAU-22/A Edit
The GD GAU-22/A is most likely the main armament of the F-35B Lightning II used by the NATO faction in-game.
General Dynamics XM301 Edit
The GD XM301 is seen mounted on RAH-66 Comanche attack helicopter used by the NATO faction in-game.
The XM312, appears as the "M312" in-game, is seen mounted on a patrol boat used by the NATO faction.