Boss Barrels Carbon Fiber 9mm AR-15 Barrel - 8.3"

Whether on the range or in the field, Boss Barrels' CARBON SERIES is built to perform. Built from a fully stress relieved, air gauged, 416R stainless blank turned down to a desired profile and reinforced with aerospace grade materials. Specifications: Caliber: 9mm Length: 8.3" Twist: 1:10 Rifling: 6R Gas Block Diameter: N/A Gas Tube: Blowback Thread: 1/2x28