>>42678Well let's compare what's on the market:
Henry AR-7: 3.5lbs takedown rifle, everything fits in a compartment in the stock, including two loaded 8 round magazines. Downside is that the AR-7 has never been a robust gun, even back when Armalite was making them.
Marlin Model 70PSS: 3.25lbs with one 7 round magazine, however the rifle must be stored in a carrying case, on the upside the case is designed to float and Marlin has a good reputation for reliability.
Ruger 10/22 Takedown: 4.67lbs, has standard 10 round box mags or 25 round sickle mags, takedown process appears to be fairly quick and easy, comes with a backpack for the gun and magazines.
Kel-Tec SU-16: Around 5lbs or slightly less depending on the model. 10 round magazine. Folds up rather than being a takedown. Most importantly it fires .223 Remington rather than .22lr. Downside might be that it's the legendary Kel-Tec quality.
Marble Game Getter: 2.5lbs. .22lr barrel over a .410 bore shotgun barrel. Folding skeleton stock. Downside is that they're rare and expensive, 3rd production models cost $2000 new back in 2010 and you may need to pay the ATF $5 for a AOW stamp on the older short barreled ones.
M6 Scout: Around 5lbs. .22lr/.410 in a rifle configuration. Has a slot in the stock for ammo. More common than the Marble and thus only around $500 on Gun Broker.
A 12 Gauge break action shotgun like the single-shot Pardner or a SxS/OI. Heavier, around 6-7lbs, however the big advantage is that you can get sub-caliber inserts allowing you to fire everything from .22lr to .45 cal ACP.