Storm lake 5.71 inch sw m and p core drop in barrel - Stormlake Pistol Barrel for Smith&Wesson M&P Pro 9mm 5.71 in. Extended Length 1/2-28 Thread With Thread Protector Isonite QPQ Black

This is a nice match grade barrel dropped right in my m and p core 5 inch pistol. Shot about 25 rounds thru it. So far seems accurate more than the factory barrel. Got this size barrel in case I want to put a compensator on it later.