Standard AR-15-pattern carbine in .223 Rem built by Windham Weaponry. 16-inch barrel with M4-style furniture and direct impingement operation. Type: Rifle Action: Semi-Automatic Caliber: 223 Rem Capacity: 30 Year introduced: 2013, USA Weight: 6.5 oz Overall length: 35.5" Status: Active Intended use: Range, Home Defense, Service