Product DescriptionThe Browning Invector-DS Extended Choke Tube delivers consistent, reliable patterns with a double-seal design that helps keep the tube cleaner and easier to remove. Engineered with Browning's proprietary differential banded gas seal and integrated spring suspension, it controls gas at the choke/bore interface for a smooth transition of the shot column. This Full constriction model for 12-gauge Browning shotguns features an extended length for simple installation and removal, and a durable stainless steel construction with a chrome finish. Note: Invector?'DS tubes fit only Browning shotguns designed for Invector?'DS and are not for use in barrels marked Invector?'Plus or Standard Invector.Product HighlightsDouble-seal Invector?'DS design helps keep choke tubes cleanerProprietary differential banded gas seal for easier removal and reduced residueIntegrated spring suspension maintains a tight seal and smooth shot transitionExtended length beyond the muzzle for convenient installation/removal and tighter patternsFull constriction for dense 12?'gauge patternsSpecsGauge: 12 GaugeConstriction Type: FullConstriction Diameter: 0.035 inModel/Configuration: Invector?'DS Extended (fits Browning shotguns with Invector?'DS barrels only)Material: Stainless SteelFinish: ChromeWeight: 1.20 ozUPC: 023614373513Manufacturer Part Number: 1134253Brand: BrowningDisclaimer: 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.