The Rob Roberts TSS Raptor Optima HP 12 Gauge choke is engineered for superior wingshooting performance especially when used with premium tungsten shot. Crafted from durable 17-4 PH stainless steel this choke is part of the esteemed RRaptor Series known for its advanced technology and years of product development. Its construction ensures enhanced durability and reliability in the field. Note that the Raptor TSS choke is designed for single-barrel placement making it a specialized choice for serious shooters seeking precision and efficiency.