The Rob Roberts Gun Works 200308 Biz Raptor Mobil 12 Gauge 17-4 PH Stainless Steel delivers precision performance for serious shooters, pairing high-performance Bismuth shot options with the RRaptor BIZ choke to optimize pattern density and consistency. Crafted from 17-4 PH stainless steel, these choke tubes embody durability and corrosion resistance, reflecting Rob Roberts Gun Works commitment to advanced technology and years of product development. This choke is designed to complement Bismuth-based loads, delivering improved performance in the field and at the range when used with the RRaptor series, making it a strong addition for those seeking reliable, repeatable shot string in 12 gauge platforms. Its important to note that Over-Shotguns can accommodate a RRaptor choke in only one barrel, as the design does not support placement in both barrels, a consideration that ensures clarity of use for single-barrel applications. With its robust materials and proven engineering, this choke tube enhances ideal chokes for shotgun enthusiasts focused on precision, patterning, and long-term wear resistance.