FN 545 MRD w/Optic Full Size .45 ACP 10+1 4.1" Black Hammer Forged/Target Crown Barrel/ Flat Dark Earth Optic Cut/Serrated Slide/Flat Dark Earth Polymer Frame w/Picatinny Rail, Holosun 407C Red Dot, Ambidextrous The FN 545 MRD is a pleasure to handle with the upgraded ergonomics. Built with enduring accuracy in mind, shooters can mount their favorite red dot sight in minutes, adding pinpoint control on command. Featuring the high endurance striker, crisp trigger pull, fully ambidextrous slide stop lever and magazine release, MIL-STD-1913 rail, Driftable steel sights co-witness, loaded chamber indicator and Low-Profile Optics Mounting System. Includes Holosun 407C, two interchangeable backstraps, two magazines, four MRD mounting plates, owners manual, locking device and case.