Optimize the performance of your AR-15 platform with the CMMG 55CA977 AR-15 Buffer Assembly. Designed for reliability and precision, this mil-spec replacement part ensures smooth cycling and enhanced function for your carbine. Manufactured by CMMG, a leader in high-quality firearm components, this buffer assembly seamlessly integrates with AR-15 rifles equipped with a carbine receiver extension, ensuring optimal performance in various shooting scenarios. Fits AR-15 rifles using a carbine receiver extension Mil-Spec quality standards Compatible with CMMG6 Position M4 Stock Kits Elevate your shooting experience today with the CMMG AR-15 Buffer Assembly.