SilencerCo 9mm 1/2"x28 416R Stainless Steel Black - SilencerCo noticed a market need for high quality pistol barrels and they stepped in to offer them. Holding to the same commitment to quality as all of their products, the threaded barrels are tough enough to hold up under the harshest conditions. Made of 416R stainless steel and finished in black nitride. SilencerCo threaded barrels come with a Thread Protector.