This is a 20-round steel magazine designed for 9mm chambered SIG SAUER P226-XFIVE pistols. It comes with a sturdy aluminum basepad that has a front serration to enhance grip while handling. It's compatible with all P226-XFIVE and P226 firearms, including MK-25. Product Features Steel Wall Construction Aluminum Baseplate Product Specifications Manufacturer: SigSauer Model: 8901167 Caliber: 9mm Magazine Capacity: 20-Rounds Additional Features: White colored Baseplate