In Defiance (Video Game), players can trade between themselves in order to exchange weapons, shields, grenades, spikes, and stims. There is no trading fee; however, players have to be mindful of the EGO Rating when trading weapons to avoid giving out unusable equipment.
How to trade
In order to trade, one has to open the quick menu or social menu from the EGO menu. Find the player you wish to trade with and invite them.
The invited player has to accept the trading offer from his or her social or quick menu. The trade invite expires after some time.