Valken Accelerate ProMatch 0.28g 2500rds Biodegradable Airsoft BBsValken ensures your never left on the battlefield without ammo, by offering 2,500 rounds of extreme precision 0. 28g airsoft BBs in a convenient resealable bottle. These BBs are professionally polished for smooth accuracy and are manufactured with tight tolerances to guarantee zero air bubbles. Valken makes sure these BBs are able to withstand the pressure when leaving the barrel with a durable seamless design. These are an environmentally friendly,