Windham Weaponry's .300 Blackout carbine with a 16-inch barrel, free-float M-LOK handguard, and stainless steel barrel. Built on the same Windham, Maine-manufactured receivers as their 5.56mm line with appropriate gas tuning for .300 BLK. Type: Semi-Auto Rifle Action: Gas-Operated Caliber: .300 Blackout Capacity: 30 Year introduced: 2016, USA Weight: 6.8 oz Overall length: 32.3" Status: Active Intended use: Hunting, Suppressor Host, Range