The Rob Roberts Gun Works 200297 TSS Raptor Invector Plus 12 Gauge 17-4 PH Stainless Steel is a precision-engineered choke designed to optimize wing shooting performance when paired with premium tungsten shot, delivering tighter patterns and enhanced load integrity for demanding field use. As a strong addition to the RRaptor Series, the TSS choke combines years of product development and innovative advancement, crafted from corrosion-resistant 17-4 PH stainless steel to endure the rigors of upland and waterfowl environments. This choke is tailored for 12 gauge applications and leverages a refined internal design that supports consistent shot consistency and improved velocity retention across a range of payloads, maximizing the effectiveness of high-density tungsten loads. It is important to note that Over-Shotguns can have a RRaptor choke in only one barrel, reflecting the unique compatibility considerations of this line. Engineered with precision tolerances and a focus on reliability, this Invector Plus compatible choke offers durable performance, straightforward installation, and a practical upgrade path for serious shooters seeking enhanced patterning and range efficiency without compromising overall firearm balance.