I found this site that should help you but I think they want you to pay something. You check it out and see if it's worth it to you.
Root Samsung Galaxy A5 (2016) on Android 5.1 Lollipop with SuperSU
I want to root my Samsung Galaxy A5 (2016) Lollipop A510K. Could anyone help me find a way? Please give me link for files I've tried searching everywhere.
Hi, You can use the free guides around the internet but i'll suggest using the right supported rooting files otherwise it will all go mass.