The Weatherby SA-459 Threat Response is a tactical/home defense semi-auto shotgun with an 18.5-inch barrel, synthetic pistol-grip stock, and ghost-ring rear sight. Gas-operated action, 3-inch chamber, and Picatinny rail. Marketed as a home defense and law enforcement shotgun at an accessible price. Type: Shotgun Action: Semi-Automatic Caliber: 12 Gauge Capacity: 5 Year introduced: 2017, USA/Turkey Weight: 80 oz Overall length: 39.5" Status: Active Intended use: Home Defense, Tactical