Bismuth is a highly regarded material in the shot shell industry for its superior performance, and it truly shines when paired with the Raptor BIZ choke. As a key addition to the Raptor Series, this choke tube stands out with years of product development and innovation. Crafted from 17-4 PH US stainless steel, it offers exceptional durability and precision. Utilizing cutting-edge machinery and advanced technology, these chokes are engineered to tolerances far beyond industry standards, ensuring consistent and reliable performance with every 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