The Sig Sauer P227 full size .45ACP 10rd factory replacement magazine is the best choice to keep your favorite centerfire handgun up and running. Made from the highest quality materials like heat treated steel magazine body with low friction polymer follower. The steel magazine spring is made from only the highest quality spring steel to make sure that the Sig P227 .45ACP 10rd magazine will feed all types of ammunition flawlessly. The Polymer baseplate provides impact resistance for the magazine when performing reloads as well as easy dissasembly for proper maintinence. The Sig Sauer P227 full size .45ACP 10rd magazine is made to the highest standards of craftsmanship and quality so you can be assured that it will work when you need it.