The Rob Roberts Gun Works 200302 TSS Raptor Invector Plus 20 Gauge 17-4 PH Stainless Steel delivers precision-engineered performance for serious wing shooters, integrating the Rob Roberts Gun Works brand with the Raptor TSS choke designed to excel when paired with premium tungsten shot. This stainless steel TSS choke, crafted from 17-4 PH U.S. stainless steel, represents years of development and cutting-edge technology, offering durability and consistency in demanding upland and waterfowl scenarios. The Raptor series choke boosts shot string control and terminal performance, helping maintains tight, versatile patterns across a variety of field conditions. Engineered specifically for 20 gauge platforms, the choke is a strong addition to the RRaptor lineup, built to withstand rigorous use while delivering dependable accuracy with high-density tungsten loads. It is designed to be installed in a single barrel, with a form and finish that complement Invector Plus receivers for a seamless fit and reliable performance. Ideal for hunters who demand enhanced choke performance with modern tungsten shots, this Rob Roberts Gun Works choke tubes option provides a balanced, long-lasting solution for superior field results.