Bismuth is a highly regarded material in the shot shell industry, prized for its reliable performance and effectiveness. When paired with the Raptor BIZ choke, it delivers optimal results, making this combination a standout choice for any shooter. As a powerful addition to the Raptor Series, the BIZ choke tube is the result of years of meticulous product development and cutting-edge innovation. Crafted from premium 17-4 PH US stainless steel, these choke tubes offer exceptional strength and durability. Manufactured with precision using advanced equipment, each tube is machined to tolerances that far exceed industry standards, ensuring consistent and dependable 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