This Sig Sauer P320 Full-Size Magazine is a factory-original 10-round steel magazine designed for 9mm P320 and P250 models. It features a durable black finish and a premium full aluminum baseplate, which provides extra weight for faster magazine drops and increased durability during reloads. This magazine is specifically engineered for compliance in capacity-restricted states while maintaining the external dimensions of a standard full-size grip. It is compatible with all full-size P320 frames, including X-Series models, thanks to the updated baseplate design. Sig Sauer P320 9mm 10rd Full Aluminum Baseplate Black Pistol Magazine 8901372