As your build is now, you're spread too thin.
Shotgun skills are always the best choice for PvP. You want high burst damage and that's what the shotty provides. Just remember to keep green pots or a Deviruchi headgear on-hand for Full Blast. Crowd Control need not be maxed as it's not for damage, just pushing. Spread doesn't technically need to be raised above Lv7 either, but if you want AoE damage instead of status proc AoE then it's best maxed.
For Grenade it's probably a good idea to use Triple Action, but you don't use coins.
Kinda weird to see a build without maxed Snake Eyes. The shotgun skills barring Crowd Control all benefit from it. Hell, even Slinger Mine does. Trigger Happy requires maxed Snake Eyes to be considered 'safe', as maximum range increases with the passive's level and base range is dangerous for such a squishy class.
Onto the lack of coins... they're what gives the Gunslinger some form of utility. Coin Fling is excellent on Classic due to DEF having a greater impact, Bullseye is an absolute must for PvP for cheap and instant damage, and in order to survive close-range engagements you'll want Cracker (not everyone in PvP is stun immune).
Buy a Smokie accessory if you haven't already. Slinger flee sucks, your AGI is negligible as a PvPer and you have no way to shut down attackers with your current build.
e: Tracking should really be affected by Snake Eyes. As it's currently implemented, it reminds me of Aim in FFT. Higher levels are completely useless unless the target is locked down.
Edited by AlmrOfAtlas, 17 March 2014 - 06:28 PM.