Dawnblade bottom tree for the ground pound heal/ground pound super. This was a trick I using during Ib for grenade kills during season 1 but it would work equally well for solar kills. If you have star fire protocol equip. In a gun fight take off the over shield from an opponent and then chuck a fusion grenade to finish them off. You would get credit for grenade and solar kills. The star fire protocols perk gives you two fusion grenades. I generally run solar only and my load out is no turning back, ikelos sg, and sleeper. For close quarters I go for chaperone, ikelos sg, and a solar linear, or a solar rocket launcher. If you don't have an ikelos sg or sleeper I would go for a solar fusion or shotgun. For heavy I tend to opt for a solar linear.

Are you close to an infamy reset in gambit? You get a trust after resetting from the drifter. Not the best roll for pvp but it does the job.

I used dawnblade, weapon wise i used trust or a solar right side of wrong which i chucked a counter balance mod on and heavy i used sleeper. It depends what type of player you are though, do you hang back, do you push, are you conservative for example.

Trust, Blade Barrage, any solar heavy you like

Mindbenders Ambition from the Hollowed Lair NF is solar an a great PvP shotty. If you good at fusion's go Merciliss with the catalyst it doubles the range. If your good with snipers go with Twilight Oath, I have the curated roll which has snapshot/ box breathing, I really like it. Sidearms Anonymous Autumn with any combo of outlaw/killclip/rampage/full auto is solid. not sure but Ace of Spades firefly perk is solar, but unsure it that would count. Heck if you have a Uriel's Gift/positive outlook in solar just use that. Sleeper. I have a Roar of the bear RL that has max blast radius, just aim for the ground or their feet. Yes I'm just listing solar weapons, but I don't know you're play style, I would stick with one hit kill weapons so I go back to Mindbender as first choice then you can run Bygones an then Sleeper. Bon Chance Wook