FN America FN 510 Tactical, Semi-automatic, Striker Fired, Full Size, 10mm, 4.71" Barrel, Polymer Frame, Black, 1-22Rd Magazines and 1-15Rd Magazine, Non-Manual Safety, Suppressor Height Night Sights, Low Profile Optics Mounting System, Barrel Threaded .578x28, Sight Protecting Slide Cap, Loaded Chamber Indicator, Interchangeable Backstraps, 1913 Accessory Rail, Ambi Slide Stop Lever, Ambi Mag Release, Includes (4) MRD Mounting Plates, (2) Frame Backstraps and Premium Zippered Case 66-101375