FN America FN 545 Tactical Pistol Magazine w/ Black Polymer Extended Floorplate .45 ACP 18 Round Silver/Black 1 Pack Stainless Steel 18RD. 45 ACP 18-Round Magazine. This factory mag boasts a low-friction polymer follower and steel wire spring combined with steel feed lips to provide smooth reliable feeding in high-stress target and defensive situations. stainless steel construction with a corrosion-resistant finish perfect for long-lasting field use in virtually any tactical environment. A polymer baseplate extension gives you a fuller grip for improved handling and better accuracy with faster follow-up shots when it matters most. Load up on new mags and order today Specifications for FN America FN 545 Tactical .45 ACP 18 Round Pistol Magazine w/ Black Polymer Extended Floorplate: Manufacturer: FN America Gun Make: FN Herstal Caliber: .45 ACP Magazine Capacity: 18 Round Color: Silver Fabric/Material: Steel Package Contents: FN America FN 545 Tactical .45 ACP 18 Round Pistol Magazine w/ Black Polymer Extended Floorplate FN America 20100734-18RD: FN 545 Tactical Pistol Magazine w/ Black Polymer Extended Floorplate .45 ACP 18 Round Silver/Black 1 Pack Stainless Steel