0.23g Excel 2500 BBs.
These high quality BBs are manufactured by Excel in Japan. Excel produces these BBs under the Standard Formula label, which means that they are not biodegradable. Excel is one of the oldest companies to produce BBs for the airsoft market and are considered the original, high quality, standardized production BB. Produced with a very high polish, they are recommended for all upgraded AEGs, gas-guns, and upgraded spring sniper rifles. The exacting standards involved in production make these perfect for use in high tolerance tightbore barrels. The designed to be an intermediate BB between 0.20g and 0.25g for player with exacting standards, the heavier weight also makes these more accurate at distances as compared to 0.20g BBs.

*Note: these BBs have a blue color because they are professionally produced under Smurf supervision.