Your hunters in Hunt: Showdown can arm themselves with a pair of pistols and hold one of their hands. The skill increases the power of using a pistol in the game, but it also decreases their accuracy as it becomes much more difficult to use two pistols at the same time. You will be able to do this from level 1 and you will not need any Traits to unlock it.
Traditionally, when a hunter wields a single pistol, it is considered a small-sized weapon, but it turns into a medium-sized slot when holding two. You'll need an average slot available, which means your character can have a medium weapon in their secondary weapon slot, or drop a large weapon in your first slot to use twice. Weapons will need to be of the same variety, but you can do this with normal and legendary weapons.
Once you've equipped it and entered a match, it will matter how you fire your weapons. They cannot leave at the same time. It would be better to choose between firing one after the other at a constant rate to give you more accuracy, or performing quick double shots with your weapon to fire them in quick succession. The best way to use them varies depending on your situation and the distance to your target. Recoil is increased compared to the traditional pistol, so you need to take this into account when shooting your weapons. When reloading your pistols, you will place the bullets one at a time, in order. Ammunition reserves are added between the two weapons. There is a new trait available called Ambidextrous available at Bloodline Rank 44 which gives you faster cooldowns while wielding twice.
Dual-use is a sought-after feature for many Hunt: Showdown players, and you can expect additional traits to be released in the future after its first update.