Hunting-configured MMR with 20-inch heavy stainless barrel, synthetic stock, and Cerakote finish for weather resistance. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 5 Year introduced: 2013, USA Weight: 7.6 oz Overall length: 39.5" Status: Active Intended use: Hunting, Varmint, Precision