Easily enhance the accuracy of your Smith and Wesson M&P handgun! Wilson CombatA(R) Match-Grade Barrels are known for their unsurpassed quality and accuracy. Now your M&P handgun can have this superb accuracy without sending your pistol off to a master pistolsmith and waiting for months. Wilson CombatA(R) match barrels are fully machined from aircraft grade stainless steel blanks and heat-treated to R/C 40 for maximum service life. Critical manufacturing tolerances are held to less than .0005" (one half thousandth of an inch!). To give you phenomenal accuracy, extreme care has been taken to assure that the chamber is glass smooth and perfectly concentric with Mfg: Wilson Combat