Elite Force BIO .28g Airsoft BBs6mmWhite5000 ct. This Airsoft Ammo from Elite Force is available in both .2 gram and .25 gram versions. Elite Force Biodegradable Airsoft BBs are the highest quality available designed for the discriminating serious player or professional. Whether you want to train in close quarters combat or just work on your aim save money safely with Elite Force Biodegradeable Airsoft Ammo. Specifications for Elite Force BIO Airsoft BBs: Manufacturer: Elite Force Color: White Ball Diameter: 6 mm Projectile Caliber: .243 Caliber Package Contents: Elite Force BIO Airsoft Ammunition Elite Force 2279062: BIO .28g Airsoft BBs6mmWhite5000 ct