The SA-459 Threat Response 20ga is the 20-gauge variant of Weatherby's gas-operated tactical platform. An 18.5-inch barrel, synthetic pistol-grip stock, ghost-ring rear sight, and Picatinny rail. The 20-gauge chambering reduces recoil for smaller-framed users while maintaining substantial terminal performance with buckshot loads. Type: Shotgun Action: Semi-Automatic Caliber: 20 Gauge Capacity: 4 Year introduced: 2019, USA/Turkey Weight: 73.6 oz Overall length: 39.5" Status: Active Intended use: Home Defense, Tactical