The CMMG AR-15 Extractor O-ring is a crucial component designed to enhance the performance and reliability of your AR-15 rifle. Engineered for durability and efficiency this O-ring is crafted to provide a secure fit ensuring optimal extraction of spent cartridges. Ideal for maintaining the functionality of your firearm this replacement part is perfect for AR-15 enthusiasts who demand consistent and dependable operation. Enhance your shooting experience with this essential accessory designed to withstand the rigors of frequent use while maintaining the high standards expected of CMMG products.