Master Sniper

After rigorous training and lots of experience you have become a master at the art of sniping,  you gain the following benefits:

you are proficient with firearms at a longer range increases your range with firearms by 50 feet

-You have advantage when a creature is more than 30 ft away, and you ignore disadvantage imposed by long ranged attacks.

-Once per turn when you are 30 feet or more away from an enemy and they are engaged in combat, you may make a sneak attack on a target in range. The damage for the sneak attack is equal to a rogue of half your level.