BARREL PR15 STEEL 6ARC 16" .750 GAS BLOCKProof Research PR15 Steel AR Barrel 6mm ARC - StainlessSKU: PR128664$749.00PriceQuantity*Add to CartSpecifications Manufacturer model: 128664 UPC: 843068128664 Type: Accessory-Barrels Caliber / gauge: 6mm ARC Barrel length: 16" Finish: Stainless Weight: 2 lbs. 12 oz. Feature 1: Rifle Gas Length Feature 2: Steel Barrel