I owned an AR-7 lnog time past.
GET ONE TODAY! They’re a great asset for a BOB: small, light, the .22LR ammo is cheap and light to pack.
The broken-down AR-7 takes only a little room in a bag or pack, and in a water situation, the stock will float long enough to recover the rifle.
The ONLY drawback I had with mine was, .22LR without a copper-jacket had a tendency to double-feed.
You obviously haven’t shopped for .22 ammo recently. 50 round boxes are going for $7.99, and the best price I’ve seen on a brick lately is 50 bucks.