Product DescriptionDial in dense, consistent turkey patterns with the Carlsons Extended Turkey Choke Tube for 12-gauge shotguns. Precision-machined from 17-4 heat-treated stainless steel with a durable matte blued finish, this non-ported choke features a tight 0.675-inch constriction and extends beyond the muzzle to help tighten patterns. Designed for the Winchester Invector thread system (standard Invector), it also fits many Browning Invector and Mossberg 500 shotguns sharing the same thread pattern. Made in the USA, this choke includes a long parallel section for optimal shot stabilization and is suitable for lead, copper-plated, or Hevi-Shot loads.Product Highlights 12-gauge extended turkey choke with 0.675 constriction for tight, consistent patterns 17-4 heat-treated stainless steel construction with matte blued finish Non-ported design; extends approximately 1 inch beyond the muzzle Engineered for the Winchester Invector (standard) system; compatible with many Browning Invector and Mossberg 500 models Made in the USA; long 1.050-inch parallel section for optimal pattern uniformity Specs Product Type: Extended Turkey Choke Tube Gauge: 12 Gauge Constriction: 0.675 in Style: Non-ported, extended Material: 17-4 heat-treated stainless steel Finish: Matte blued Choke System/Thread Pattern: Winchester Invector (Standard); also fits many Browning Invector and Mossberg 500 shotguns Length Beyond Muzzle: Approx. 1 in Parallel Section Length: 1.050 in Compatible Ammunition: Lead, copper-plated, or Hevi-Shot Country of Manufacture: USA UPC: 723189198961 Part Number: 19896 Brand: Carlsons No steel shot larger than #4 should be used in turkey chokes.Disclaimer: 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.