The .20 gram, 6mm BBs for the Airsoft BB Gun feature a sleek design that helps keep competition at bay and includes an anti-jam lid funnel that will keep your game going and give you an advantage over the other players. These Ignite Black Ops Premium Air Soft BBs can be used with a variety of 6mm Airsoft Guns. Ignite Black Ops Premium Biodegradable .20 Gram 6mm Air Soft BBs, 10,000-Count with Bonus Zombie Targets: * High-grade, tight tolerance (+/- 0.015mm) * Polished finish increases velocity by up to 10 percent * Bonus zombie targets included * Compatible with all 6-mm airsoft guns