Deadeye A5E

Your natural talent or skill makes you lethal with a ranged weapon.

You gain proficiency with the Farshot Stance and Ricochet maneuvers, and do not have to spend exertion to activate them.
Before you make an attack with a ranged weapon you are proficient with, you can choose to take a penalty on the attack roll equal to your proficiency bonus. If the attack hits, you deal extra damage equal to double your proficiency bonus. This extra damage does not double on a critical hit.
You ignore half cover and three-quarters cover when making a ranged weapon attack.

Source: Adventurer's Guide (EN Publishing) · License: Creative Commons Attribution 4.0 / OPEN GAME LICENSE Version 1.0a details