Adaptive Combat Rifle — a modular rifle originally developed by Magpul as the Masada concept. Features quick-change barrels, ambidextrous controls, and a folding stock. Originally promising but commercially unsuccessful at its price point. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2009, USA Weight: 140 oz Overall length: 36" Status: Discontinued Intended use: sport, military