Shoot the best. G&G has the highest quality BB's due to their relentless testing and development to bring you other best.BB pellets manufactured by G&G Armament are high precision products, unlike other manufacturers in the market accepting tolerance of size and sphere within 0.01mm, G&G Armament control the tolerance within 0.005mm, which is the most precise BB pellets in the market. Perfect surface and precise size for incredible air-seal and feeding. Bio BBs from G&G Armament are true bio degradable, well received by world market and environmental friendly sites.G&G Armament's BB pellets are well known for the best choice for high precision barrels and jam free BB pellets. Made in Taiwan and G&G Armament represents high quality BB pellets.