Ruger SR9 P19/10 10 Round Magazines are chambered in 9mm. These SR9 magazines are constructed of blued steel with reliable and durable internal parts and mechanics. Stop wasting time reloading your magazines at the range and buy an additional magazine for your Ruger SR9 9mm pistol. Factory original magazines are made to the same specifications that your original magazine was, so the function is equivalent to what yours was brand new.
