M&P match barrels for M&P 9, M&P 40, M&P 2.0, and M&P Pro platforms built for the accuracy demands of USPSA Production and Carry Optics competitors. Brands include Barsto, KKM, and Apex Tactical, offering drop-in match barrels machined to tighter chamber and bore tolerances than factory barrels for smaller groups and more consistent velocity. Threaded and non-threaded options are available depending on whether you're running a compensator or a standard slide, and bore diameters are matched to 9mm and .40 S&W chamberings. Tighter tolerances improve case support for hotter Major power factor handloads while maintaining reliable feeding and extraction through a full stage. Drop-in fitment means most of these barrels install without gunsmithing, making them accessible upgrades for shooters looking to improve accuracy without a full custom build. Compatibility covers M&P 9, M&P 40, M&P 2.0, and M&P Pro Series frames and slides, with barrel length options matched to full-size and compact models. Whether you're tightening groups for Production or building a threaded Carry Optics gun, a quality aftermarket barrel is one of the highest-value upgrades on an M&P platform. Fast same-day shipping on most orders at Shooters Connection.