The FN 545 MRD Comp .45 brings FNs proven striker-fire design to a hard-hitting 45 ACP platform, marrying a 15+1 capacity with an auto-indexing MRD compensator and an optic-ready, serrated slide finished in Flat Dark Earth for rapid target acquisition and reduced recoil and muzzle rise. As a member of FNs 500-series striker pistols, this model is built for duty, home defense, and range work where follow-up shots and control matter; the crisp trigger and refined ergonomicsadjustable with two interchangeable backstraps and fully ambidextrous magazine release and slide stophelp shooters of different hands and grips maintain consistent sight picture and split-second accuracy. With a 4.43" barrel length, no manual safety, and an included set of MRD mounting plates, locking device, manual and protective zippered case, the 545 MRD Comp is ready for optics, holster setups, and hard use out of the box while requiring FFL transfer. Keywords: FN, FN 545, MRD compensator, .45 ACP, 15+1 capacity, striker fire, optic ready, Flat Dark Earth, ambidextrous controls, backstraps.