We recommend only using high quality 6mm airsoft BBs with KRYTAC airsoft guns. Using poor quality BBs may result in poor performance, or in the worst case scenario, damage to your KRYTAC product.
KRYTAC airsoft guns are designed to only use standard 6mm airsoft BBs, whether plastic or biodegradable. Do not attempt to use any other type of pellet, such as aluminum or other metal BB, air gun pellets, etc..
The most common BB weight in use with KRYTAC airsoft guns is 0.25g. Some players may choose to use heavier weight BBs, such as 0.28g or heavier. For KRYTAC airsoft guns designed with a lower power output, such as our AEGs designed for the Italian and Japanese markets, so-called "350 FPS" versions, etc., lighter 0.20g BBs are a common choice.
Ultimately, it is up to the individual player to find what works best for them, given the power output of their KRYTAC airsoft gun and expected performance. If you are not sure what to use, or you have no preference, 0.25g is a solid starting point.