The Tiger Rock B9MM-7 7 oz Bolt Buffer is a top-tier enhancement for your AR-9mm setup, optimizing performance and reliability. Constructed from high-quality stainless steel, this buffer is designed to enhance cycling, reduce wear, and maintain peak function during high-velocity shooting. 7 oz weight for optimized cycling Corrosion-resistant stainless steel construction Dimensions: 4 inches for easy drop-in installation Engineered for durability in demanding environments Upgrade your rifle's performance with the Tiger Rock B9MM-7 and experience seamless shooting.