PRODUCT DESCRIPTION PRODUCT SPECIFICATIONS FN 545 MRD 45ACP FDE 10+1 407C Manufacturer: FN Rate of Twist: 1-in-16" Color: Polymer Frame Flat Dark Earth Polymer Polymer Frame Barrel Length: 4.1" Model: FN 545 MRD Holosun Finish: Flat Dark Earth Caliber: 45 ACP Action: Striker Fired Capacity: 10 + 1 UPC: 845737018313