Aero Precision M4E1 Complete Rifle in Freedom configuration with 16-inch barrel and no-frills furniture. Stripped-down value build on the M4E1 platform. Type: Semi-Auto Rifle Action: Semi-Automatic Caliber: 5.56x45mm Capacity: 30 Year introduced: 2021, USA Weight: 62 oz Overall length: 32.5" Status: Active Intended use: General Purpose/Entry-Level