The CMMG AR-15 Ejection Port Cover Hinge Pin is a precision-engineered component designed to enhance the functionality and reliability of your AR-15 rifle. Crafted from high-quality materials this hinge pin ensures smooth operation and secure attachment of the ejection port cover protecting the internal components of your firearm from debris and environmental elements. Its robust construction and exact fit make it an essential upgrade or replacement part for maintaining the optimal performance of your AR-15. Ideal for enthusiasts who demand durability and efficiency this hinge pin is a testament to CMMG's commitment to quality and innovation in firearm accessories.