Special Purpose Rifle variant of the IC-A5 with an 18-inch barrel optimized for precision at extended ranges. The longer barrel increases muzzle velocity over the 16.1-inch and provides an improved sight radius for iron-sight shooting. Type: Semi-Auto Rifle Action: Piston-Operated Caliber: 5.56x45mm Capacity: 30 Year introduced: 2015, USA Weight: 7.6 oz Overall length: 37.5" Status: Active Intended use: Precision, Patrol, Long Range