Product Description The Winchester Invector-Plus Signature choke tube delivers consistent, reliable patterns for your Winchester 12-gauge shotgun. Built from durable 17-4 stainless steel with an extended length and precision tapers, this Improved Modified constriction is optimized for versatile field and target performance. It fits Winchester shotguns with back-bored barrels that use the Invector-Plus choke system and is approved for use with steel, lead, and non-toxic shot. Product Highlights Extended-length Signature Series design for uniform, consistent patterns Precision-machined 17-4 stainless steel for strength and corrosion resistance Improved Modified constriction (0.025 in) ideal for mid-to-long range versatility Compatible with Winchester shotguns using the Invector-Plus choke system Non-ported, stainless finish; safe with steel, lead, and non-toxic shot Specs Gauge: 12 Gauge Choke System: Invector-Plus (Signature Series) Choke Size: Improved Modified Constriction: 0.025 in Type: Extended Material: 17-4 Stainless Steel Finish: Stainless Ported: No Approved Shot Types: Steel, Lead, Non-Toxic Recommended Range: 50 yards Chokes Included: One choke Firearm Fit: Winchester shotguns with Invector-Plus back-bored barrels UPC: 048702178733 Manufacturer Part Number: 6130733 Brand: Winchester Guns 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.