The CMMG Mk9 Bolt Catch is a precision-engineered component designed for reliable performance in AR-style platforms chambered in 9mm. Crafted from durable materials this bolt catch ensures smooth operation and consistent engagement making it an essential upgrade for enhancing the functionality of your firearm. Its robust construction is tailored to handle the unique cycling characteristics of 9mm rounds providing shooters with confidence in every shot. Ideal for both competitive shooting and tactical applications the CMMG Mk9 Bolt Catch stands out for its reliability and ease of installation.