Aero Precision AC-15 with 16-inch barrel and enhanced features. Aero's updated platform with improved ergonomics and furniture over the M4E1. Type: Semi-Auto Rifle Action: Semi-Automatic Caliber: 5.56x45mm Capacity: 30 Year introduced: 2022, USA Weight: 63.5 oz Overall length: 32.5" Status: Active Intended use: General Purpose