The Smith & Wesson S&W 14401 Barrel for the M&P 9 is a precision-machined 9mm handgun barrel designed to fit any M&P M2.0 chambered in 9mm with a 4.25 slide, delivering reliable performance and enhanced control for duty, range, or personal defense setups. This 4.625-inch barrel with a black finish provides a balanced blend of velocity and accuracy, and its threaded 1/2-28 profile enables straightforward installation of compensators or suppressor-ready configurations for practical versatility at the range or on the job. Weighing 5 oz, it maintains a lightweight profile while preserving accuracy and sustained reliability under standard shooting conditions. Note that compatibility excludes M&P M1.0 models, ensuring you select the correct barrel for your platform. The threaded design supports modular upgrades, giving shooters the option to tailor their grip, muzzle device, or recoil management without changing the action. With its robust construction and exacting tolerances, this barrel helps maximize consistency in shot placement and overall firearm performance, making it a smart upgrade for M&P 2.0 owners seeking a dependable, threaded 9mm barrel.