The Faxon Duty Series Light Tapered Barrel for the 9mm luger is manufactured 100% in-house from cradle-to-grave. The barrel is machined from certified 4150 CMV steel with QPQ nitride coating for added durability and longevity. Each barrel is magnetic particle inspected (MPI) to ensure perfect surfaces and sub-surfaces as well as air-gauge tested to ensure superior accuracy. The Faxon Light Tapered barrels are button rifled, and are individually checked for headspace by precision custom hardened gauges. They also features Colt and Glock compatible feed ramps. Features4150 CMV Steel ConstructionBlack Nitride FinishColt/Glock Compatible Feed Ramps11-degree Target CrownParticle InspectedButton Rifled