Weapon Mastery (Requires specialization in 1 specific weapon, ONLY available to single classed Fighters) 

+2 to attack rolls and a +1 to damage rolls for previously specified weapon ( this stacks with specialization, making total bonuses +3 and +3)

Ranged weapons ignore disadvantage for enemies within 5 ft

Ranged weapons gain 1 additional attack every other round

Disadvantage to all weapons not taken in this feat