Bismuth has become a highly regarded material in the shot shell industry due to its exceptional performance, particularly when paired with the Raptor BIZ choke. This choke tube enhances the Raptor series, built with years of research, development, and innovation. Made from premium 17-4 PH US stainless steel, it offers superior durability and reliability. Each tube is precision-machined with state-of-the-art equipment to tolerances that far exceed industry standards, ensuring outstanding consistency and performance every time you take a shot. Over-Shotguns can have a Raptor choke in only 1-barrel, the design of the choke does not allow for placement in both barrels, ensuring optimized performance in one barrel