Promag Pro Mag Magazine Colt Govt .45acp 8-rounds Black Nitride. 45 ACP (8) RD BLACK NITRIDE STEEL Specifications for Promag Pro Mag Magazine Colt Govt .45acp 8-rounds Black Nitride: Manufacturer: ProMag Gun Make: 1911 Platform Gun Model: Colt 1911 Government .45 ACP Caliber: .45 ACP Magazine Capacity: 8 Round Finish: Black Nitride Fabric/Material: Steel Dimensions: 0.75 x 4.55 x 5.70 in Width: 4.55 in Length: 5.7 in Package Contents: Promag Pro Mag Magazine Colt Govt .45acp 8-rounds Black Nitride What firearm models does the manufacturer say Promag Pro Mag Magazine Colt Govt .45acp 8-rounds Black Nitride is compatible with? The manufacturer suggests that Promag Pro Mag Magazine Colt Govt .45acp 8-rounds Black Nitride is compatible with Colt 1911 Government .45 ACPPromag Pro Mag Magazine Colt Govt .45acp 8-rounds Black Nitride