Product DescriptionBismuth is a popular material used in shot shells throughout the industry, and it performs best when paired with the RRaptor BIZ choke. Part of the RRaptor Series, this precision shotgun choke tube is engineered through years of product development using advanced technology. Built from 17-4 precipitation-hardened U.S. stainless steel, it delivers dependable durability and consistent patterns. Designed for the Mobil choke system in 12 gauge shotguns. Note: Over/under shotguns can use an RRaptor choke in only one barrel due to the choke design.Product HighlightsOptimized RRaptor BIZ choke for enhanced bismuth shot performance12 gauge Mobil configuration for compatible shotgunsConstructed from 17-4 precipitation-hardened U.S. stainless steelEngineered through advanced, proven development for consistent shot patternsImportant: Over/under shotguns support one RRaptor choke barrel onlySpecsGauge: 12 GaugeChoke Configuration: MobilSeries: RRaptorModel: BIZMaterial: 17-4 precipitation-hardened stainless steelWeight: 0.19 lbPackage Dimensions (L x W x H): 7.50 x 3.90 x 1.30 inchesUPC: 810174902174Manufacturer Part Number: 200308Brand Name: Johnny StewartDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.