The Ruger® SR1911® Competition 9mm 10-Round Magazine offers match-grade performance and dependable firepower. This original OEM magazine is made of laser-welded stainless steel and has a corrosion-resistant black finish. It is intended to provide dependable service in challenging conditions. The stainless steel follower and high-tensile steel spring guarantee smooth operation, while the numbered witness holes enable quick round counts at a glance. Even better, this magazine has a polymer base cushion for increased toughness and stress resistance. American made.