PROMOCODE which unlocks 15 models for free for the first 1000 users:
N71F
Instructions: run the game,go to the main menu, open console by pressing ~, type promo , use CAPS LOCK, press Enter
Example: promo N71F
Attention on different languages key for console may be different
Promo code has to be entered in the main menu!
P.S.
You'll find assault rifle, pistols, smgs, machineguns, revolvers, tank!!!!