Product DescriptionOptimize your shotgun&';s pattern performance with the Winchester Repeating Arms Invector-Plus Signature choke tube. Designed for Winchester back-bored barrels using the Invector-Plus system, this extended, non-ported choke delivers consistent, uniform patterns. Precision-machined from durable 17-4 stainless steel with a stainless finish, the Modified constriction is a versatile choice for upland hunting, waterfowl with appropriate shot, and recreational clays.Product Highlights Invector-Plus Signature extended choke for Winchester back-bored 12-gauge shotguns Modified constriction (.020) for balanced patterns across field and clays applications 17-4 stainless steel construction for strength and corrosion resistance Compatible with steel, lead, and other non-toxic shot; non-ported design Includes one choke tube; optimized for approximately 45-yard performance Specs Gauge: 12 Gauge System/Model: Invector-Plus, Signature Series Constriction: Modified (.020) Type: Extended Material: 17-4 Stainless Steel Finish: Stainless Ported: No Shot Compatibility: Steel, Lead, Non-Toxic Recommended Range: 45 yds Chokes Included: 1 Weight: 3.20 oz UPC: 048702178740 Manufacturer Part Number: 6130743 Brand: Winchester Repeating Arms 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.