Lightweight MMR variant using a carbon-fiber handguard and a thin-wall 16-inch barrel to reduce overall weight. Mossberg's answer to the lightweight AR category dominated by BCM and Daniel Defense lightweight builds. Type: Semi-Auto Rifle Action: Gas-Operated Caliber: 5.56x45mm Capacity: 30 Year introduced: 2017, USA Weight: 6.4 oz Overall length: 35" Status: Active Intended use: Hunting, Range, Patrol