M4 delta ring assembly

E&C (East Crane) is the brand of East Crane (Hong Kong) Co., Ltd., a company with more than 20 years of experience in the development and manufacture of airsoft guns and components. Building on its extensive expertise, the company introduced the E&C brand to offer well-built airsoft replicas at an affordable price. E&C products are widely recognized for their full-metal construction, reliability, durability, and excellent value for money. Thanks to these qualities, E&C has become a popular choice among both beginner and experienced airsoft players.