The Smith & Wesson M&P has a reinforced polymer chassis, superior ergonomics, ambidextrous controls, and proven safety features. In designing the M&P, Smith & Wesson considered the needs of military and law enforcement from every conceivable angle, so the M&P is the standard in reliability when your job is to serve and protect and your life is on the line. This M&P 9 model includes a 4.7" threaded barrel with 1/2"x28 threads, three interchangeable grip sizes, two magazines, Picatinny rail, and no thumb safety.