The Geissele Super Duty in .223 Wylde with an 18-inch barrel is the precision-oriented member of the Super Duty family. The .223 Wylde chamber accepts both .223 Remington and 5.56x45mm ammunition and the longer barrel provides additional velocity for extended range shooting. Type: Semi-Auto Rifle Action: Direct Impingement Caliber: .223 Wylde Capacity: 30 Year introduced: 2020, USA Weight: 7.3 oz Overall length: 35.5" Status: Active Intended use: Precision, Range, Competition