Carlsons 40040 Replacement Winchester 12 Gauge Rifled Choke Tube - Invector

The Carlson's Choke Tubes 40040 is a precision rifled choke tube designed as a direct replacement for 12 Gauge Winchester shotguns using the Invector choke system. Built for shooters who want to maximize the accuracy of slugs fired from a smoothbore barrel, this rifled choke delivers the spin stabilization and bore alignment needed to tighten groups at hunting distances.

Manufactured from 304 high-stress stainless steel, the tube is engineered for durability, corrosion resistance, and long service life in harsh field conditions. A matte black finish reduces glare and blends with most barreled actions. The rifled interior features a .730 constriction diameter, optimized to stabilize slug projectiles when fired from a smoothbore barrel.

Designed specifically for the Winchester Invector-pattern 12 gauge shotgun, this replacement choke installs easily in place of the existing tube. Each choke protrudes approximately .625 to 1.3 inches from the end of the barrel depending on the specific Winchester model. Whether you are converting a field gun for deer season or fine-tuning a dedicated slug-hunting setup, the Carlson's 40040 offers a reliable, purpose-built solution backed by Carlson's reputation for precision choke engineering. One choke tube is included.