The AR-7 was invented by the same guy who invented the M-16 and was developed at ArmaLite along with the Air Force's 1950's ~ 1960's survival...bolt action version... the AR-5.
Armalite sold the rifle rights to Charter Arms in the early 1970's, and Charter Arms gave up on them and sold the rights to Henry Rifles around 1980~81...If I remember correctly, this rifle (the semi auto AR-7 version) was not exactly a 'reliable-at-all-times' type of firearm UNTIL Henry Rifles got their hands on it. They actually are a pretty nice rifle now, for their intended purpose...SURVIVAL. As a primary one gun piece, I believe a shooter would be better off with any one of several other rifles that price out in about the same dollar range.
Still, the AR-7 rifles now being put out by HENRY are a hell-of-a-lot better than the ones from 20~30 years ago, and I do know several people who keep these 'Henry' versions in their trucks/trunks for a 'just in case' firearm. Some of these guys can actually hit stuff with them (just joking, they're quite accurate).
Happy Shootin'