The Kimber Micro .380 ACP/9mm Black Magazine Catch Assembly 4100189 is a factory original part designed to ensure reliable performance and secure magazine retention for your Kimber Micro pistol. Made from high-quality steel, this magazine catch assembly is built to withstand rigorous use and maintain the optimal functioning of your firearm. Ideal for both .380 ACP and 9mm models, this assembly provides a secure and consistent magazine release, making it an essential component for maintaining your pistol.