Needs of PvP skill build or coaching

Maplestory 2 Rep: 200
Posts: 5
edited 6:06AM July 25, 2018 in Heavy Gunner
Heya guys. I tried heavy gunner and I love the class the most out of all. So I want to get myself into PvP did few matches won mostly but I can't find a good skill build. What is the best way to deal damage via regular attacks or with one hit skills?
I am using mostly the stun grenade gravity grenade, the bomb kit, lock on and the gatling gun attack when I have no means of SP regeneration.

So any tips what I should take and any strategies or helpful tips? Appreciate it.