Match Grade Bullets (10) (5e Equipment)
From D&D Wiki
Match grade bullets are very well made, subjected to more rigorous than usual quality control, and designed for an extremely narrow tolerance and precise accuracy. Because they are so hard to make they are expensive, costing at bare minimum ten times as much as normal bullets. Any modern firearm which uses bullets for its ammunition can fire match grade bullets. If you are using a firearm with a match grade barrel, you gain a +2 bonus to attack rolls with match grade bullets.
Weight: 1 lb.