The Rob Roberts Gun Works 200318 Biz Raptor Optima HP 12 Gauge 17-4 PH Stainless Steel combines precision engineering with modern materials to deliver reliable performance for serious shooters using bismuth loads, a popular choice in shot shells across the industry. This RRaptor BIZ choke is designed as a strong addition to the RRaptor Series, optimizing performance when paired with bismuth shots to enhance patterns and consistency across the field. Crafted from high-strength 17-4 PH stainless steel, the choke tube embodies durability and corrosion resistance, built through years of product development and the latest advanced technology to withstand demanding hunting and range conditions. The design accommodates 12 gauge platforms and ensures compatibility with single-barrel configurations on over-shotguns, acknowledging the practical note that a RRaptor choke can reside in only one barrel. With its engineered bore, the Biz Raptor Optima HP choke helps shooters maximize each shot, turning preferred bismuth loads into more uniform patterns and improved hit probability while maintaining smooth, reliable cycling. This model embodies Rob Roberts Gun Works commitment to performance, quality, and value for discerning shotgun enthusiasts.