Winchester Repeating Arms 613054 Invector Plus12 Gauge Improved Cylinder 17-4 Stainless Steel

The Winchester Invector Plus 12 gauge choke tube in Improved Cylinder constriction gives you the versatility to dial in your shotgun's performance for different shooting scenarios. Built from 17-4 stainless steel, this tube is engineered to handle the rigors of hunting and sport shooting—including steel shot—without the wear that can degrade lesser choke systems. The Invector Plus design uses a longer internal taper that produces denser, more uniform shot patterns with fewer fliers, giving you the consistency you need when it counts.

If you run a Winchester shotgun with the Invector-Plus system, swapping tubes is straightforward: each choke seats cleanly in the barrel without gas leakage between tube and bore. That seal matters. It protects both the choke and barrel from the pressure and corrosion that can occur with inferior designs, especially over years of regular use and steel shot hunting. You get a choke that lasts and performs predictably, season after season.

The Improved Cylinder constriction strikes a middle ground—more open than Modified, tighter than Cylinder—making it a solid choice for hunting upland game, clay sports at moderate distances, and situations where you want a wider, more forgiving pattern. Whether you're building out a full set of tubes or replacing a worn choke, this 17-4 stainless tube brings Winchester's proven Invector-Plus reliability to your shotgun.

Key Features

• 17-4 stainless steel construction for durability and corrosion resistance
• Invector-Plus choke system with longer internal taper for consistent, dense patterns
• Sealed design eliminates gas leakage between choke and barrel
• Improved Cylinder constriction for versatile hunting and sport shooting
• Proven durability with steel shot and heavy use

Specifications

Frequently Asked Questions

What Winchester shotguns are compatible with Invector-Plus choke tubes?

The Invector-Plus system is found on Winchester shotguns designed to use it. Check your shotgun's barrel or manual to confirm it's Invector-Plus equipped before purchasing this choke tube.

What's the difference between Improved Cylinder and other choke constrictions?

Improved Cylinder is a relatively open constriction, tighter than a Cylinder choke but more open than Modified. It produces a wider shot pattern at distance, making it useful for hunting upland game and clay shooting at moderate ranges where you want forgiveness and spread.

Can I use this choke tube with steel shot?

Yes. The 17-4 stainless steel construction and Invector-Plus design are built to handle steel shot without degradation, unlike some competing choke systems that can wear faster under steel shot use.

Is this a flush-mounted or extended tube?

Based on the product model and specs provided, this is a standard Invector-Plus choke tube. Confirm with the product listing whether it installs flush with the barrel or extends beyond it, as Winchester offers both styles.