The whole future warfare aspect of the game is very interesting, it's a pretty good approach for a milsim in my opinion, it's still going to be a milsim, even if it is based 22 years in the future. It also allows for some breathing room regarding artistic creativity regarding small arms, mechanized armour, and air vehicles.

Yep, OP should've checked before stating that they are all fictional.

Actually, the Ifrit is a real vehicle in Russia. It's called the "Punisher" in real life. http://img846.imageshack.us/img846/1669/punisher3.jpg

http://www.automotto.com/batmobile-lookalike-punisher-armored-4x4-set-join-russian-armory.html

The Katiba in real life is the DIO KH2002 SAMA
http://img37.picoodle.com/img/img37/3/1/16/f_khayarm_d5c080f.jpg

the TAR-21 in game uses the airsoft model of the IMI Tavor TAR-21
http://en.wikipedia.org/wiki/IMI_Tavor_TAR-21

and the MX guns are modeled after a mixture of elements taken from the Remington ACR and the Robinson Armament XCR firearms.
http://cheaperthandirt.com/blog/wp-content/uploads/2010/07/acr-featured-blk.jpg
http://emptormaven.com/img/XCR_SBR_HTG_suppressor_EOTech_LaRue649_ARtripler.jpg

Aswell as the SDAR in real life is the Kel-Tec RFB Carbine.
http://en.wikipedia.org/wiki/Kel-Tec_RFB

And the Hunter is the Oshkos M-ATV
http://upload.wikimedia.org/wikipedia/commons/5/53/Oshkosh_M-ATV_Afghanistan.jpg