Product DescriptionThe Winchester Signature Series Invector-Plus choke tube is engineered for consistent, uniform patterns with an extended length and refined taper design. This 12-gauge, Extra Full constriction tube (.040) is built from durable 17-4 stainless steel with a stainless finish and is intended for Winchester brand shotguns using the Invector-Plus system on back-bored barrels. Optimized for long-range performance (45+ yards), this tube is lead-shot only and arrives as a single choke.Product Highlights Extra Full constriction (.040) delivers tight, long-range patterns Constructed from corrosion-resistant 17-4 stainless steel with a stainless finish Designed for Winchester shotguns with back-bored barrels using the Invector-Plus system Optimized for 45+ yard performance; lead shot only Signature Series extended length for reliable, uniform patterning Specs Gauge: 12 Gauge Constriction Type: Extra Full Constriction Diameter: 0.040 in Choke Configuration: Invector-Plus Type: Extended Material: 17-4 Stainless Steel Finish: Stainless Ported: No Recommended Range: 45+ yards Approved Ammunition: Lead Only Firearm Fit: Winchester brand shotguns with back-bored barrels (Invector-Plus system) Chokes Included: One Weight: 3.20 oz Series: Signature UPC: 048702178702 Manufacturer Part Number: 6130703 Brand Name: 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.