Carlsons Choke Tube Flush - Mount 20ga Mod Invector

The Carlsons Choke Tube Flush-Mount 20ga Mod Invector is a precision-engineered shotgun choke designed for shooters who demand reliability and consistent performance in the field. Built for Winchester Invector-compatible shotguns, this modified choke tube delivers the versatility needed for hunting, sport shooting, and tactical applications where shot pattern density and range matter. Flush-mount design keeps the choke level with the barrel muzzle, reducing snags on gear and obstacles—a critical advantage for law enforcement and military operators working in confined spaces or transitional environments.

Machined from 17-4 stainless steel, this choke tube resists corrosion and handles high-pressure ammunition cycles without degradation. The .600-inch diameter bore is optimized for modified choke constriction, tightening your shot pattern to extend effective range while maintaining adequate spread for moving targets. This construction is proven safe across all common ammunition types—lead, steel, copper-plated, and nickel—making it adaptable to inventory constraints or mission-specific ammunition requirements without risking chamber or barrel damage.

This choke is ideal for 20-gauge shooters—including those running lighter recoil platforms or training programs where reduced felt recoil improves shot placement. Installation is straightforward: simply unscrew the existing choke tube and hand-tighten the Carlsons unit into the Invector threads until snug. The flush-mount profile ensures compatibility with standard shotgun slings, tactical slings, and M-LOK-mounted accessories without fouling. For anyone running Winchester-based systems in patrol, sport, or home-defense roles, this tube delivers proven accuracy and durability at a professional-grade standard.