BARREL PR15 STEEL 6ARC 20" .750 GAS BLOCKProof Research PR15 Steel AR Barrel 6mm ARC - StainlessSKU: PR130384$749.00PriceQuantity*Add to CartSpecifications Manufacturer model: 130384 UPC: 843068130384 Type: Accessory-Barrels Caliber / gauge: 6mm ARC Barrel length: 20" Finish: Stainless Weight: 3 lbs. 3 oz. Feature 1: Rifle + 1 Gas Length Feature 2: Steel Barrel