The FN 502 MRD is a single action rimfire pistol that allows you to easily add a micro red dot sight. This outstanding pistol is ready for any task from target shooting to competing in your local steel match. The slide is made from a combination of aluminum and steel with a set of co-witness height iron sights that provide a clear sight picture through an optic. Additionally, the slide is cut to use FN's Low-Profile Optics Mounting System which allows for the attachment of a wide variety of popular reflex sights when paired with the correct mounting plate (plates not included). Outstanding ergonomics allow for a comfortable shooting experience, and with ambidextrous controls the FN 502 is ideally suited for right and left handed shooters alike. The FN 502 MRD is also compatible with most FN 509 Tactical holsters, making it an excellent and affordable training tool for anybody who owns an FN 509. If you want the best of the best in a modern rimfire pistol, the FN 502 MRD has everything you need! FNH Item Number: 66-101012 Semi-Automatic Rimfire Pistol Hammer Fired Caliber: .22 Long Rifle Capacity: 10 Rounds 4" Stainless Steel Barrel Recessed Target Crown Twist Rate: 1:16" RH Optic Co Witness Height Iron Sights Low-Profile Optics Mounting System Loaded Chamber Indicator Fits Most FN 509 Tactical Holsters Ambidextrous Slide Stop Ambidextrous Thumb Safety Polymer Frame with Enhanced Texturing Front and Rear Cocking Serrations Anodized Aluminum and Steel Slide Picatinny Accessory Rail Sight Radius: 5.5" Overall Length: 7" Height: 5.4" Width: 1.4" Weight: 22.5 oz Color: Flat Dark Earth