Rainier Arms Select .300 BLACKOUT Barrels

There are a number of advantages to polygonal rifled barrels; such as less bullet deformation, resulting in reduced drag as well as prolonged barrel life, not to mention ease of cleaning. These barrels were made to Rainier Arms exact specifications & drawings and made of 416R Stainless steel. Controlling the manufacturing process to provide the most accurate barrel in its price range. Guaranteed to shoot sub-MOA at 100 yards with match ammo. You deserve this confidence inspiring barrel for your next custom build.