The Rob Roberts Biz Raptor Optima HP 12 Gauge Choke is a premium addition to any shotgun setup. Constructed from durable 17-4 PH stainless steel this choke is engineered for maximum performance with bismuth shot shells. Its advanced design reflects years of innovation and product development ensuring superior shot patterns and reliability. Ideal for sportsmen looking to enhance their shooting precision this choke is specifically crafted for single-barrel use delivering optimal results in the field.