How to send a gift to another player?

No, all items are account bind, can't be send to other accounts as gift, sell or trade.
The only gift you can send to another player is ZP -> and the only option is using prepaid card -> select amount -> click "send as gift" and complete IGN ( in game name ) of the player you wish to give the zp.

Login game website : Get ZP -> Add ZP -> Prepaid card -> select available service -> select the amount of ZP -> click "Buy as gift" , select Crossfire and write IGN ( in game name ) -> continue and enter the prepay code , the player who receive ZP will receive also the bonus if is qualifying for it.