The Alexander Arms Infantry model is a duty-weight 6.5 Grendel carbine with a government-profile barrel and mil-spec components, representing the cartridge's original vision as a battlefield upgrade over 5.56. Type: Rifle Action: Semi-Automatic Caliber: 6.5 Grendel Capacity: 26 Year introduced: 2008, USA Weight: 66 oz Overall length: 35.5" Status: Active Intended use: Tactical