airsoft pellet; BB pellet
Small spherical plastic pellet used in airsoft guns. Common in hobby and recreational contexts.
We use BB pellets in survival games.
This airsoft gun is compatible with 0.2-gram BB pellets.
Kana variant of the 'BB' part; sometimes seen in informal writing.
From English 'BB' (originally a size designation for shot) + 弾 (bullet/pellet). The term was adopted into Japanese for airsoft pellets.