Accuracy is one of the most important features of a 1911 pistol, next to reliability. To achieve maximum accuracy, you must start with only the best barrel. Wilson Combat® match-grade barrels are fully machined from aircraft grade stainless steel forgings and heat-treated to R/C 40 for maximum service life. Critical manufacturing tolerances are held to less than .0005". To give you phenomenal accuracy, extreme care has been taken to assure that the chamber is glass smooth and perfectly concentric with the bore. In our barrel test fixture, we routinely obtain test groups of ˝" at 25 yards; the accuracy is guaranteed to please you! Throughout the manufacturing process each barrel undergoes multiple quality-control checks, with a detailed final inspection prior to receiving the Wilson name. You can be sure that if your barrel bears the Wilson name, it's the best there is!