The Stern Defense 9mm AR-15 bolt is a precision engineered component tailored for enthusiasts and professionals seeking to enhance their pistol caliber carbine experience. Crafted specifically for 9mm AR-15 platforms, this bolt is a testament to Stern Defense's commitment to quality and innovation. Constructed from robust 8620 AISI steel, it boasts a hardened Melonite finish, ensuring exceptional durability and corrosion resistance. This bolt is versatile, seamlessly integrating with both Glock and Colt Magazine systems and is compatible with all standard and Glock pattern upper receivers. Designed for ease of use, it works with standard charging handles and comes fully-assembled, complete with all necessary pins and springs for a hassle-free installation. Please note, this bolt is not designed for use with full-automatic fire control groups, making it ideal for semi-automatic configurations. Elevate your PCC setup with the reliability and performance of the Stern Defense 9mm AR-15 Bolt.