This magazine is built with stainless steel, features a polymer extension sleeve, stainless steel spring, polymer follower, and impact-resistant baseplate. With a limited lifetime warranty, it's a reliable choice for any firearm enthusiast. This Springfield factory original magazine may arrive in "bulk packaging", meaning it may not be fitted inside of a plastic clamshell package. Manufacturer: Springfield Armory Fits: XD Full-Size Models - Service/Tactical Caliber: .40 Capacity: 12-Round