Anderson Manufacturing's AM-15 Optic Ready is a stripped-down carbine that omits iron sights in favor of a flat-top upper receiver ready for an optic. The 16-inch chrome-moly barrel with carbine-length gas system is Anderson's standard M4-profile offering. The Optic Ready designation targets buyers who plan to mount a red dot or scope immediately and do not want to pay for sights they will remove. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2015, USA Weight: 60 oz Overall length: 32.5" Status: Active Intended use: Home Defense, Target Shooting, First AR