These Ruger factory replacement magazines are manufactured from steel and have a matte black finish. These magazines also come with an easy-to-use reloading button, heat-treated internal wire spring, and two flat polymer baseplate if you choose to change out the extended floorplate. This 2 Pack of 10 round Ruger factory magazines are designed to keep your SR22 firing smoothly for many years to come. These magazines were designed exactly to specifications to match your original equipment and will reliably feed a wide variety of ammo brands.