The YHM 9MM Bolt Buffer is a high-quality stainless steel buffer specifically designed for carbine stocks. With its added weight and length, this buffer effectively prevents breakage of the bolt catch, making it an essential upgrade for 9mm AR builds. Each buffer includes a military specification bumper and weighs 5.9 oz, ensuring durability and reliability during operation. Its sleek black finish complements your firearm while enhancing functionality. Intended Use: Ideal for enhancing 9mm AR-15 builds. Key Benefits: Prevents bolt catch breakage with extra weight and length. Key Features: - Stainless steel construction for durability - Designed specifically for 9MM applications - Military specification bumper included - Weighs 5.9 oz for optimal performance Summary: Upgrade your AR-15 with the YHM 9MM Bolt Buffer for improved reliability and performance, ensuring your firearm operates smoothly during shooting sessions.