The Sig Sauer Factory 1911 .45 ACP 8 Round Magazine is a 8-round magazine chambered for 45 ACP. It features Stainless Steel construction. It is intended for Sig Sauer 1911 compatibility.It is a straightforward choice for replacing a worn magazine or keeping an additional magazine available for range training or field use.Caliber: 45 ACPCapacity: 8 roundsMaterial: Stainless SteelFit: Sig Sauer 1911