Direct impingement AR-10 pattern battle rifle in 7.62x51mm NATO with a 16.5-inch barrel. Windham Weaponry was founded by former Bushmaster employees in the original Bushmaster factory. All American-made in Windham, Maine. Type: Rifle Action: Semi-Automatic Caliber: 7.62x51mm NATO Capacity: 20 Year introduced: 2014, USA Weight: 8 oz Overall length: 36" Status: Active Intended use: Patrol / Range / Hunting