M400 variant with integrated suppressor provisions, Cerakote finish, and SIG-specific rail layout designed for law enforcement patrol with suppressor. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2021, USA Weight: 7.3 oz Overall length: 32.5" Status: Active Intended use: Suppressed, Law Enforcement, Patrol, Duty