The Olympic Arms K3B is a value-priced AR-15 carbine that was one of the first affordable AR-15s available to civilians during the pre-ban era, helping democratize the platform for the consumer market. Type: Semi-Auto Rifle Action: Gas-Operated Caliber: 5.56x45mm Capacity: 30 Year introduced: 1999, USA Weight: 6.5 oz Overall length: 35" Status: Discontinued Intended use: Collector, Historical, Plinking