This is a 4000 round bag of KSC/KWA 6mm 0.20g Perfect BBs. This particular weight of BBs is suitable for indoor play, where there is no wind and usually no obstructions (such as brush) between you and your target.

KSC/KWA BBs are extremely high quality BBs - many of the staff at AirsoftFix are running KSC/KWA BBs in their guns, and these are also the BBs we recommend with every KWA gun that goes out.