Reliable, biodegradable skirmish ammo
The ASG Open Blaster Bio BB in 0.20g is a dependable, site-legal choice for airsoft players who want clean feeding and consistent accuracy without harming the environment. Made from PLA, a plant-based biodegradable plastic, these BBs break down naturally outdoors, meeting the bio-only rule enforced at most UK woodland and outdoor sites.
Precision that protects your gun
Every BB is manufactured to a tight plus/minus 0.01mm tolerance with a diameter held between 5.96 and 5.98mm. The polished, seamless, high-gloss surface reduces friction through the hop-up and barrel, which means fewer jams, less wear on your hop rubber and tighter, more repeatable groupings on target.
The right weight for stock setups
At 0.20g this is the go-to weight for most standard AEGs and gas pistols firing up to around 350fps. It delivers a flat, fast trajectory at close and mid range, making it ideal for CQB and general skirmishing. If you run a hotter or upgraded gun, consider stepping up to a heavier BB for better stability.
Bulk value for game day
Each resealable bottle holds 3300 rounds, enough to see most players through a full day and easy to decant into hi-cap magazines between games. Keep a spare in your kit bag so you never run dry mid-skirmish. Browse more ammo, gas and batteries in our BBs, gas and batteries range.
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