PWS MK116 with 18-inch chrome-lined barrel and long-stroke piston system in rifle-length gas configuration. The extended barrel improves velocity for precision applications while maintaining the reliability benefits of PWS's piston operation in a longer dwell configuration. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2010, USA Weight: 114 oz Overall length: 37" Status: Active Intended use: Precision Shooting, Tactical, Sport Shooting