Elite Force Bio BB's6mm New GO GREEN! Precision Biodegradable BBs from the Umarex USA Elite Force line of high end airsoft guns. Elite Force BBs are highly polished, and fully biodegradable. Elite Force offers a newly formulated airsoft BIO BB that breaks down within 180 days in a compost environment. Packaged in a resealable airtight bottle, Elite Force Bio BBs have the longest shelf life of any brand on the market. The Elite Force BIO Airsoft BB has been tested by veteran players for accuracy and consistency in multiple variations models of airsoft guns, proving the Elite Force BB as a perfected formula that accurately performs both during and after competition. Plastic bottle packaged for easy magazine fill up. Increase your game with Elite Force BBs. Precision accuracy.