Although I can't really speak from experience for ground, I would go with a two piece omega force set for the damage and stealth buff an antiproton sniper rifle. If this is for PVE then get the three piece omega for the demodulation proc. for a kit I'm not really sure, you could get one with stealth module, or maybe the romulan firing team.
Comments
Weapon: MACO Phaser Battle Rifle.
The point of sniping is to avoid the need for armor and shields.
Though... I kinda figured those were implied by the battle rifle... MACO set (rifle, shield, & armor).
Pick rifle of your choice. MACO is good
Get Operative Tac Ground kit MK X rare
No one will see you......ever
MACO is the best set for PvE.
When it comes to PvP matches, the answer becomes a little more complex.