A direct-impingement AR-15 on the Tread platform, providing a feature-rich base rifle at an accessible price point in Sig's lineup. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2019, Germany Weight: 72 oz Overall length: 35.5" Status: Active Intended use: Home Defense, Sport, Duty