The CMMG AR-15 Extractor Spring and Buffer Kit is an essential upgrade for your AR-15 ensuring reliable performance and smooth operation. Designed for durability and efficiency this kit includes a high-quality extractor spring and buffer crafted to meet the rigorous demands of firearm enthusiasts and professionals alike. Whether you're in need of a replacement or looking to enhance your rifle's functionality this kit provides a seamless fit and superior resilience making it a must-have addition to your AR-15 maintenance arsenal.