Johnny Stewart Rob Roberts Gun Works 200323 Biz Raptor Optima Hp 20 Gauge 17-4 Ph S/S

The Johnny Stewart Rob Roberts Gun Works Biz Raptor Optima HP 20 gauge choke tube is a precision-engineered component built from 17-4 PH stainless steel for durability and consistent performance in the field. If you're running a 20 gauge shotgun and want a choke option that delivers reliable constriction without the corrosion concerns of standard steel, this is the kind of upgrade that pays dividends over years of hunting or sport shooting. Rob Roberts Gun Works' reputation for quality choke manufacturing comes through in the material choice and machining here—17-4 PH stainless is tough, holds its dimensions, and stands up to repeated use and cleaning.

The Biz Raptor Optima HP designation points to a design engineered for specific shot patterns and velocity management. This isn't a one-size-fits-all choke; it's built with intent. Whether you're working upland birds, waterfowl, or clay targets, a quality choke tube tailored to your load and barrel makes a measurable difference in pattern density and point-of-aim consistency at distance.

Stainless steel construction means you won't be dealing with rust pitting or finish breakdown—especially valuable if your shotgun sees wet conditions or sits in storage between seasons. The 17-4 PH alloy is the same material trusted in demanding applications across industry, so you're not compromising on metallurgy for the sake of price.

Key Features

• 17-4 PH stainless steel construction for corrosion resistance and durability
• Precision-manufactured choke tube engineered by Rob Roberts Gun Works
• Designed for 20 gauge shotguns
• Biz Raptor Optima HP specification for optimized shot patterns

Specifications

Frequently Asked Questions

Will this 20 gauge choke tube fit my shotgun?

This is a 20 gauge choke tube, so it will fit shotguns chambered in 20 gauge with a choke tube system. Always verify your shotgun has removable choke tubes and consult your owner's manual for proper installation.

What's the advantage of 17-4 PH stainless steel for a choke tube?

17-4 PH stainless steel resists corrosion and oxidation far better than standard steel or plated alternatives. It holds its finish through repeated cleaning and field use, and maintains precise dimensions over time, which keeps your patterns consistent.

What does the Biz Raptor Optima HP design do?

The Optima HP is a specific choke constriction profile designed by Rob Roberts Gun Works to manage shot patterns and velocity. The exact pattern characteristics depend on your load and barrel, but this design is engineered for optimized performance in the field.