FN CAL (Carabine Automatique Legere), FN's first 5.56 NATO assault rifle. Gas-operated rotating bolt, predecessor to the FNC. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 20 Year introduced: 1966, Belgium Weight: 7.2 oz Overall length: 37.4" Status: Discontinued Intended use: Collector