Double-stack .40 S&W tactical Para with four tactical features: rail, night sights, extended controls, and beavertail. The Tac-Four name referenced four tactical upgrades applied to the base P16-40 platform. Type: Pistol Action: Semi-Automatic Caliber: .40 S&W Capacity: 16 Year introduced: 2002, Canada Weight: 40 oz Overall length: 8.5" Status: Discontinued Intended use: Tactical, Law Enforcement