The Carlson's Choke Tubes 19964 Replacement Browning Invector Plus 12 Gauge Modified Flush Stainless Steel delivers a reliable, USA-made solution for Browning Invector Plus shotguns, featuring a stainless steel, 17-4 heat treated construction that ensures durability and corrosion resistance in demanding field and range use. Designed to fit Browning Invector Plus platforms, this modified constriction choke provides consistent patterns and versatile performance with 12 gauge shells, supporting a wide range of loads while maintaining the integrity of the barrel and ensuring clean, repeatable operation. The choke is compatible with Steel, Lead, and Hevi-Shot, though users should avoid Steel shot larger than BB or speeds over 1550 fps when using a constriction tighter than full, reinforcing safe, effective use across different game pursuits. Its stainless finish and robust construction enhance longevity in exposure to the elements, while the .720 constriction diameter offers balanced spread and controlled density for practical upland and waterfowl scenarios. With one choke included, this Carlsons option stands as a dependable, high-performance upgrade that complements the Invector Plus system and supports versatile hunting and shooting applications.