Sig Sauer P211 Black P320 9mm Luger Handgun Magazine - 23 Rounds - This factory magazine comes standard with all 23-round P211 models and is fully compatible with all 9mm P320 pistols, as the P211 utilizes the same magazine platform. Designed for reliability and ease of use, it features rear witness holes for quick round-count verification, a high-visibility orange follower for easy unloaded confirmation, and a black baseplate for a clean, streamlined look. The baseplate assembly combines a durable aluminum construction with a polymer sleeve for enhanced strength and fitment. Its one-piece sleeve design is optimized to seat flush with the P211 as well as full-size and carry P320 grip modules. When used with compact P320 grip modules, a visible gap will remain.