Built from high-quality stainless steel precision polished and treated with premium coatings these barrels rival custom work and deliver the best in accuracy and performance round after round. Features match-grade precision drop-in barrel 6 groove rifling low-temperature vacuum PVD coating creates a durable barrier against wear and tear even in the harshest environments BORSLICK Boron Nitride DCD (Dynamic Compound Deposition) inner bore treatment resists heat and carbon buildup and a target crowned muzzle. No gunsmith required.