Product DescriptionThe RRaptor Biz choke tube is engineered for Invector Plus 20-gauge shotguns and is specifically tuned to deliver exceptional performance with bismuth shot. Built from durable 17-4 precipitation-hardened U.S. stainless steel, it reflects years of innovation and advanced manufacturing. Please note: on over-under shotguns, RRaptor chokes are designed to be used in only one barrel due to their unique construction.Product HighlightsPrecision-machined from 17-4 precipitation-hardened U.S. stainless steelDesigned for Invector Plus systems on 20-gauge shotgunsOptimized for bismuth shot performance with RRaptor Biz profilePart of the RRaptor Series built from advanced product developmentOver-under shotguns: install in only one barrel by designSpecsGauge: 20 GaugeChoke Configuration: Invector PlusSeries/Model: RRaptor BizMaterial: 17-4 precipitation-hardened stainless steelUPC: 810174902129Manufacturer Part Number: 200303Brand 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.