Windham MPC with 16-inch chrome-lined barrel, M4 handguard, and flat-top upper receiver. The MPC is Windham's interpretation of the standard M4 Carbine configuration with commercial-grade materials and the same quality controls applied across their product line. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2011, USA Weight: 98 oz Overall length: 32.25" Status: Active Intended use: Sport Shooting, Tactical, Home Defense