The Rob Roberts Biz Raptor Invector 12 Gauge Choke is engineered for optimal performance with bismuth shot shells. Crafted from 17-4 PH stainless steel this choke offers durability and precision. As a standout in the RRaptor Series it benefits from extensive product development and cutting-edge technology. Please note this choke is designed for use in a single barrel of your shotgun ensuring focused and consistent shot patterns. Ideal for hunters and shooting enthusiasts it enhances your firearm's capabilities with reliability and superior craftsmanship.