Product DescriptionEngineered for dense, consistent patterns with bismuth shot, Carlsons Bismuth Bone Buster Extended Range choke tube is CNC precision machined from 17-4 heat-treated stainless steel and features a longer parallel section inside the choke for superior performance versus conventional factory tubes. Optimized for bismuth, it also works with lead, Hevi-Shot, TSS, and steel shot (steel not larger than #2). Designed to fit Beretta and Benelli shotguns using the Mobil choke system, this American-made choke delivers the reach and reliability demanding hunters expect.Product HighlightsPurpose-built for bismuth shot to deliver tight, bone-crushing patternsExtended Range design marked "ER" for confident shots at longer distances17-4 heat-treated stainless steel with CNC precision machining for durabilityCompatible with steel (up to #2), lead, Hevi-Shot, and TSS for versatile useFits Beretta/Benelli Mobil choke system; includes free choke wrench; Made in USASpecsGauge: 20 GaugeChoke Type: Extended RangeCompatibility: Beretta/Benelli Mobil choke system shotgunsMaterial: 17-4 heat-treated stainless steel; CNC precision machinedDesign: Longer parallel section for improved pattern densityShot Compatibility: Bismuth; lead; Hevi-Shot; TSS; steel shot up to #2 sizeIncluded: Free choke wrenchCountry of Manufacture: USAUPC: 723189092153Manufacturer Part Number: 09215Brand: CarlsonsDisclaimer: 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 products manufacturer.