The strength of an airsoft gun can only be as strong as its ammunition. Not only is the choice of BBs essential for the field, it also plays a huge role for the interior health of your gun. Krytac ballistic balls are designed and engineered to perform at the highest level, whilst maintaining a superior level of precision and cleanliness. Each and every BB is carefully polished and cleaned to a glossy finish before being bottled. The overall result is a uniform projectile, with an accurate and predictable trajectory, that can consistently and fluidly cycle. Each bottle of Krytac .28g BBs radiates 4000 rounds of high performance ammunition. 0.20g is the most commonly used airsoft weight, and should be the lightest weight loaded into your Krytac airsoft gun. Guarantee that your gun never stops performing at the utmost of its abilities with Krytac precision ammunition. Good BBs go a long way.