LWRC REPR MKII in 7.62x51mm with 16-inch barrel, short-stroke piston system, and Monoforge upper. Battle rifle configuration with piston reliability. Type: Semi-Auto Rifle Action: Semi-Automatic Caliber: 7.62x51mm NATO Capacity: 20 Year introduced: 2014, USA Weight: 114 oz Overall length: 35.5" Status: Active Intended use: Battle Rifle/Patrol