You're accomplished in the art of firing a precise shot at long ranges to do maximum damage. Setting ambushes, traps and digging in to make your shots from hiding.
Features
Level 3: Firearm Proficiency
You become proficient in handling firearms and firing them. Add your Proficiency Bonus to Attack and Damage Rolls with Firearms.
Level 3: Improved Steady Aim
When you use the Steady Aim feature you can make an Attack at Long Range with Advantage.
Level 3: Silenced Shot
You've learned how to make a silencer for your Firearms. On a Long Rest you can make a Tinker's Tools check DC12 to create a silencer for your Firearm. Once it's attached it makes minimal noise and can only be heard within a 10 ft Radius.
Level 9: Sniper Hide
You can take 10 minutes to prepare a hiding location from which you can fire from. While you're in your hide you get a +10 bonus to Stealth Checks and are not automatically revealed when you make an Attack. Enemy creatures must make a Perception Check equal to your Stealth to discover you.
Level 13: Fire and Move
After you made a Steady Aim shot you can take the Dash action for free and setup in a new location.
Level 17: Right Between the Eyes
Once per Short Rest when you are hiding you can treat a hit from a Firearm as a Critical Hit.