Rock Island Armory 51656: Action: DA/SA - Caliber: 9mm - Capacity: 10 - Finish: Parkerized - Grips: Polymer - Front: Integrated to Slide - Rear: Snag-Free - Barrel Length: 3.66\" - Overall Length: 7.48\" - Weight: 1.83 lb. The Mapp series is comprised of a durable lightweight polymer design. A great choice for self defense and lawful concealed carry. Perfect for protecting yourself and comes in a full and mid-size options.