Henry U.S. Survival AR-7 Rifle .22 cal. Called the Pilot's rifle sometime. All parts fit into the stock. Floatable.... This has evolved from the Armalite AR-5 Bolt Action 22 Hornet made by ArmaLite, a division of Fairchild Engine and Airplane Corporation in 1954.
Henry US Survival Rifle, AR-7: Leave it to Henry Rifles to take a design and improve upon it. The AR-7 was the civilian version of an Air Force survival rifle designed by Eugene Stoner, which Henry acquired the rights to circa 2007. As you can see from the picture, the rifle disassembles and fits into its own buttstock which is “water resistant” (Henry claims it will float and it may but don’t bet on it).