Eugene Stoner's design for Armalite featuring a hollow plastic stock that stores the receiver and two magazines, with the barrel and action floating in water. Designed as the US Air Force aircrew survival rifle, adopted as the AR-7. Type: Rifle Action: Semi-Automatic Caliber: .22 LR Capacity: 8 Year introduced: 1959, USA Weight: 2.75 oz Overall length: 34.5" Status: Discontinued Military use: Yes Intended use: Survival, Collecting