The Smith & Wesson S&W 14478 Slide Assembly for M&P9 M2.0 brings an optic-ready upgrade to your trusted M&P9 M2.0 pistol with a durable FDE finish and a 4.25-inch barrel length, designed to be used with your original frame assembly, barrel, and recoil spring for a seamless drop-in fit. This slide cut is engineered for optical sight installation, and with the included CO.R.E. plate and screw system, you can mount a variety of aftermarket optics to enhance precision across a range of lighting conditions. The design offers a drop-in fit that makes swapping between optical sights easier while maintaining a reliable, cohesive feel with your existing handgun platform. Co-witness height white dot sights stay visible in low light, ensuring an optimal sight picture even when your optic is mounted, and you still retain open sights for backup or faster target acquisition. The assembly measures approximately 7.4 inches in length and weighs around 7 ounces, calibrated in 9mm with a color/finish in FDE, and is configured to work with 4.25-inch barrels while supporting optic-ready functionality and consistent performance for target shooting, defensive scenarios, and competition alike.