The ArmaLite AR-7 Explorer is a semi-automatic .22 Long Rifle rifle developed from the AR-5 that was adopted by the U.S. Air Force as a pilot and aircrew survival weapon. The AR-7 was designed by American firearms designer Eugene Stoner, who is most associated with the development of the AR-15 rifle that was adopted by the US military as the M16. Its intended markets today are backpackers and other recreational users as a takedown utility rifle. The AR-7 is often recommended by outdoor users of recreational vehicles (automobile, airplane or boat) who might have need for a weapon for foraging or defense in a wilderness emergency.
The prototype of what would become the AR-7 was designed by Eugene Stoner at ArmaLite Inc., a division of Fairchild Aircraft. The rifle shares some of the features of the bolt-action AR-5, another rifle designed by Stoner for ArmaLite and adopted by the United States Air Force in 1956 as the MA-1. The MA-1 was intended to replace the M4 Survival Rifle and the M6 Aircrew Survival Weapon which was a superimposed ("over-under") twin-barrel rifle/shotgun chambered in .22 Hornet and .410 bore, using a break-open action. The AR-5 had the advantage of repeat fire over the then-standard M6, using the same .22 Hornet cartridge. When the AR-5 was adopted as the MA-1 but was not placed in issue due to the numbers of M4 and M6 survival weapons in USAF inventory, ArmaLite used the research and tooling for the AR-5 in developing the AR-7 for the civilian market.
AR 7 or AR-7 can refer to: