I gave it an 8. Kills most enemies really quickly, is versatile and really light to boot. It is not a grade based on damage alone, one has to take into account that it offers the wielder a good cooldown too.
Random Salarian soldier walks into Udina's office. Salarian: "I would like to know more about human culture". Udina: "We humans are..."
One of the best pistols in the game. Unlike the Paladin, it has enough power to one-shot most enemies in one headshot on gold. Paladin cannot even do this with Phasic ammo, while Arc Pistol can do it with a variety of ammo depending on the faction. This is the ideal stasis sniper gun.
in theory i would give this a 10th or two more than just a 9... but since we're doing whole numbers, a 9 will suffice....
Good ROF if you wanna go trigger happy, and an excellent amount of damage i you want to snipe with it. I don't know if its the aiming zone or something else, but its amazingly easy to land headshots with this gun at range without a scope. Its not the lightest of pistols, but its light enough to get to 190-200 with most classes that aren't maxed. Another ideal caster weapon, that also works particularly well with classes that have Stasis and Net.
I honestly think its only competition for best pistol in the game is the Talon, and the Arc is only a Rare.
You can mash the trigger if you want, and the charge even lets you bypass shield gate because of the triple shot. It wasn't that great at launch, but has become something special with all of the buffs it's received.