Pyroslinger Bracers are Fatui Skirmishers that can generate Pyro elemental armor in battle, which will grant the Pyroslinger heavy amounts of DMG reduction. The shield can be broken by Hydro elemental DMG.
They attack by firing a Pyro bullet from their rifle. When getting too close to them, they dash backward. When their elemental armor is active, they alternate between shooting only 1 bullet or shooting 3 bullets in the same direction. When getting too close to them, they not only dash backward, but also shoot 1 bullet right after.
When the armor is broken, the Pyroslinger is stunned briefly, leaving an opening to attack. Take advantage of this to the best of your ability. They will also back off if the player strays near to them before retaliating by firing a searing bullet.