The CMMG AR-15 Buffer Retainer with Spring is an essential component designed to ensure the smooth operation and reliability of your AR-15 rifle. Crafted with precision engineering this buffer retainer and spring set is built to maintain the buffer system's integrity preventing unwanted movement during firing. Easy to install and compatible with standard AR-15 platforms it provides a secure fit that enhances performance and prolongs the lifespan of your firearm. Ideal for both new builds and replacements this durable set is a must-have for any AR-15 enthusiast looking to optimize their shooting experience.