The AR-7 was designed by Eugene Stoner for the US Airforce in 1958, a couple of years after he designed the AR-10 (which went on to evolve into the AR-15). This Henry AR-7 Survival Rifle, I am sure, would have put a smile on Stoner's face.
"bronco" developed a conversion kit which allows a standard AR-15 pistol grip and stock to be attached to the AR-7 receiver. A forum posting over at the Predator Wild forum seems to suggest he may be willing to sell these kits.
The stock / pistol grip kit.
Next Chapter has written a review of the Henry AR-7.
Many thanks to Heath for sending me the link.
Tam reminds us all that even though .22 Long Rifle is a weak cartridge, proper headspacing is still necessary. Case failure can be dangerous with any firearm / cartridge.
The Next Chapter reviews the AR-7

IMHO, this is an affordable, expendable rifle. When weight and size are critical for packing, it is something that I can carry for use as a last resort, something that may be just barely enough gun to do get me through an unexpected crisis. It will never be my first choice for a kit gun or a survival rifle; it is an alternative.
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While it will never be as popular as the versatile Ruger 10/22, the AR-7 does have a following. Only you can decide what would be a good fit for your kit.
More here.