Echo1 Match Grade BBs are designed with hardcore airsoft players in mind. As avid players ourselves, we know what you need in a high quality airsoft BB. Echo1 Match Grade BBs are specifically made for Echo1 simulated training weapons so won't need to worry about jams and mis-feeding. You've got the best airsoft gun, it's best you used the best BBs for it as well. Get some Match Grade Echo1USA BBs today!