Charter Arms Corporation's production of the AR-7 Explorer survival rifle following their acquisition of the design from Armalite. Charter Arms produced the AR-7 from 1973 to 1990 with minor improvements over the original. Type: Rifle Action: Semi-Automatic Caliber: .22 LR Capacity: 8 Year introduced: 1973, USA Weight: 2.5 oz Overall length: 34.5" Status: Discontinued Intended use: Survival, Collecting