Stern Defense Barrel Features The Stern Defense Barrel is machined from chrome moly steel chosen for its strength and resistance to wear under repeated firing cycles. Chambered in .40 SW the barrel runs 16.1 in length with a 1:16 twist rate that stabilizes projectiles for consistent accuracy. A black Melonite finish is applied to the exterior and bore adding corrosion resistance beyond what bare steel or standard bluing provides. This finish also contributes to smoother cycling by reducing friction during operation. A .578x28 thread pattern at the muzzle allows for the attachment of muzzle devices or a suppressor giving shooters flexibility in configuring their build. The barrel s precise chrome moly construction supports long service life even under sustained use. Because it is sold as a standalone replacement part it offers an accessible way to refresh an existing firearm s barrel without purchasing a complete new build. For shooters looking to upgrade accuracy or add threading capability to a .40 SW platform this barrel is a dependable choice. Stern Defense Barrel Specifications Manufacturer: Stern Defense Caliber: .40 SW Material: Chrome Moly Steel Finish: Black Melonite Twist Rate: 1:16 Barrel Length: 16.1 Thread Pattern: .578x28 Available At: GrabAGun