Spuhr SICS Weight Kit Interior Heavy Barrel 2-pack. Specifications for Spuhr SICS Weight Kit Interior Heavy Barrel: Manufacturer: Spuhr Fabric/Material: Stainless Steel 1672 Carbon Steel Weight: 7.05 oz Features of Spuhr SICS Weight Kit Interior Heavy Barrel Designed for use with heavier barrel profiles Weight: 200 g/7.05 oz (per set including fasteners) Made from SS 1672 carbon steel with Corr-I-Durr surface treatment. Package Contents: Spuhr SICS Weight Kit Interior Heavy Barrel Screws Spuhr CA008: SICS Weight Kit Interior Heavy Barrel 2-pack