Winchester Repeating Arms 613050 Invector Plus12 Gauge Extra Full 17-4 Stainless Steel Black

The Winchester Invector Plus 12 gauge extra full choke tube is a precision-engineered interchangeable choke designed to tighten your shot pattern when you need maximum density downrange. Built from 17-4 stainless steel with a durable black finish, this extra full constriction tube gives waterfowl and turkey hunters the tight, consistent patterns that separate a clean harvest from a wounded bird. If your Winchester shotgun uses the Invector-Plus system, this tube is your go-to for extended-range shooting where every pellet counts.

The Invector-Plus design uses a longer internal taper that produces denser, more uniform shot patterns with fewer fliers—the kind of consistency that matters when you're calling birds into decoys or glassing a ridge at first light. The 17-4 stainless steel construction stands up to repeated use and the corrosive effects of steel shot, without the premature wear you'd see in cheaper choke systems. The tight fit of the Invector-Plus tube prevents gas leakage between choke and barrel, which protects both components from accelerated degradation.

Whether you're swapping chokes between morning ducks and afternoon upland birds, or you want a dedicated extra full tube for your dedicated waterfowl gun, the Winchester Invector Plus offers the reliability and pattern performance that serious shotgunners depend on. Drop it in, twist it tight, and trust the shot.

Key Features

• 17-4 stainless steel construction for durability and corrosion resistance
• Longer internal taper design for consistent, dense shot patterns
• Extra full constriction for maximum range and pattern tightness
• Invector-Plus system compatibility with Winchester shotguns
• Steel shot safe—engineered to handle steel without degradation
• Black finish for a clean, professional look

Specifications

Frequently Asked Questions

Will this choke tube fit my Winchester shotgun?

The Winchester Invector Plus tube is designed for Winchester shotguns equipped with the Invector-Plus choke system. Verify your shotgun's choke system before ordering—not all Winchester models use Invector-Plus.

What's the difference between extra full and other constrictions?

Extra full is the tightest constriction in the Invector-Plus lineup, designed to keep shot patterns dense at longer ranges. It's ideal for waterfowl and turkey hunting where maximum range and pattern density matter most.

Can I use steel shot with this choke tube?

Yes. The 17-4 stainless steel construction is engineered to handle steel shot safely and withstand repeated use without premature wear.

How do I install and remove the choke tube?

The Invector-Plus system uses a simple twist-in/twist-out design. Unscrew it by hand or with a choke tube wrench, and hand-tighten the replacement tube until snug—do not over-tighten.