Johnny Stewart Rob Roberts Gun Works 200137 T2 Triple Threat Invector 20 Gauge 17-4 Ph S/S

The Johnny Stewart Rob Roberts Gun Works T2 Triple Threat Invector choke tube is a stainless steel solution for 20-gauge shotgun users who demand durability and reliability in the field. Built from 17-4 pH stainless steel—a material chosen for its corrosion resistance and strength—this choke tube is engineered to handle season after season of hunting, sport shooting, or clay work without degradation. The Invector compatibility means it fits 20-gauge shotguns using the Invector choke system, giving you a precision-engineered tube that works as hard as you do.

Whether you're patterning loads for waterfowl, upland birds, or improving your shot patterns at the range, a quality choke tube is fundamental to consistency. The T2 Triple Threat designation indicates this is purpose-built for serious shooters who understand that constriction matters. Stainless steel construction means you won't be fighting rust or corrosion if you're hunting in wet conditions or storing the tube long-term without obsessive maintenance—a practical advantage for working guns.

Johnny Stewart and Rob Roberts Gun Works have built their reputation on components that function reliably when it counts. This choke tube reflects that ethos: no marketing fluff, just durable steel designed to deliver consistent performance. If you're upgrading your 20-gauge's shot patterns or replacing a worn tube, this is the kind of straightforward, well-made accessory that belongs in your shotgun bag.

Key Features

• 17-4 pH stainless steel construction for corrosion resistance and durability
• Compatible with 20-gauge Invector choke system shotguns
• T2 Triple Threat design for precision performance
• Built to withstand repeated use in hunting and sport shooting applications

Specifications

Frequently Asked Questions

Will this choke tube fit my 20-gauge shotgun?

This choke tube is designed for 20-gauge shotguns with Invector choke systems. Verify your shotgun uses the Invector system before purchasing—Invector compatibility varies by manufacturer and model.

Why choose stainless steel for a choke tube?

17-4 pH stainless steel resists corrosion and rust, making it ideal for hunters working in wet conditions or anyone who doesn't want to worry about tube maintenance between seasons. The material also provides the strength needed for reliable, consistent performance.

What's the difference between the T2 Triple Threat and other choke tubes?

The T2 Triple Threat is Rob Roberts Gun Works' designation for this specific design. Without additional performance data in our records, we recommend contacting the manufacturer directly to understand how its constriction pattern compares to other options for your intended use.