The following new option can be selected by fighters, paladins, and rangers for the Fighting Style class feature. These are options that have been added by options in Unearthed Arcana. There have been a few tweaks to make the fighting style more balanced.
Close Quarters Shooter
You are trained in making ranged attacks at close quarters. When making a ranged attack while you are within 5 feet of a hostile creature, you do not have disadvantage on the attack roll. Your ranged attacks ignore half cover and three-quarters cover becomes half-cover against targets within 30 feet of you. Finally, you have a +1 bonus to attack rolls on ranged attacks within 30 feet.
As long as you are not wearing heavy armor or using a shield, you have a swimming speed and a climbing speed equal to your normal speed minus 10 feet, and you gain a +1 bonus to AC.
You excel at defending narrow passages, doorways, and other tight spaces. As a bonus action, you can enter a defensive stance that lasts until the start of your next turn. While in your defensive stance, you can make opportunity attacks without using your reaction, and you can use your reaction to make a melee attack against a creature that moves more than 5 feet while within your reach.