The CMMG Mk9 Firing Pin Spring is a precision-engineered component designed for the CMMG Mk9 series. Crafted from high-quality materials this durable spring ensures reliable firing pin movement and optimal performance in your firearm. Its robust construction offers consistent tension and longevity making it an essential part of maintaining the efficiency and functionality of your CMMG Mk9. Ideal for enthusiasts and professionals alike this firing pin spring is a critical upgrade for anyone looking to enhance the reliability of their shooting experience.