The Rob Roberts Gun Works 200303 Biz Raptor Invector Plus 20 Gauge 17-4 PH Stainless Steel choke tube is engineered to tighten patterns and maximize performance with modern bismuth shot loads. Built for Invector Plus 20-gauge shotguns, it combines a black BIZ-marked front section with a precision-machined stainless steel body for consistent, repeatable pattern control.

This choke is a dedicated accessory for hunters and shooters who want cleaner hits and more efficient pellet distribution, especially when chasing turkey or upland birds. Its 17-4 PH stainless steel construction offers durability and corrosion resistance across varied field conditions, while the RRaptor BIZ design is optimized specifically for bismuth shot shells. As part of the RRaptor Series, it reflects Johnny Stewart’s focus on thoughtful engineering and long-term performance in shotgun accessories.

Key Features:

• Manufacturer: Johnny Stewart
• Model: Rob Roberts Gun Works 200303 Biz Raptor Invector Plus
• Caliber/Gauge: 20 Gauge
• Material: 17-4 PH Stainless Steel
• Type: Invector Plus choke tube optimized for bismuth shot
• Series: Raptor / RRaptor BIZ