Crossbow Expert

4th Level Feat, Proficiency with Any Martial Weapon

Repeatable: No   Thanks to extensive practice with crossbows, you gain the following benefits:   Ability Score Increase. Increase your Dexterity score by 1, to a maximum of 20. 
Ignore Loading. You ignore the Loading property of crossbows.
Firing in Melee. Being within 5 feet of an enemy doesn’t impose Disadvantage on your Attack Rolls with crossbows.
Dual Wielding. When you make the extra attack of the Light weapon property, you can add your Ability Modifier to the damage of the extra attack if that attack is with a crossbow that has the Light property.