How about the USAF M4 survival rifle from the cold war years. It was a 22 hornet take down bolt action with a collapsable stock (grease gun style) It was in the under seat survival packs for long range bombers in the '50's. Replaced by the M6 22hornet over 410 break action. The idea was that with bombers flying holding patterns over the arctic and over the oceans, awaiting orders to change course and bomb the Ruskies (glad that didn't happen) a plane could go down and take a while to find. The rifle wasn't really for 'fighting behind the lines' or the like. It was for shooting birds or maybe even a snowshoe hare. Something to hold you over while waiting for help to find you. In the days before satelite tracking, that would take a little longer than it would today. As I understand it, bomber crews today may or may not have an M9 pistol. The plan today is to pick them up faster because we know where they are with greater certainty that was possable then.
Anyway, here's an auction with pictures of one. This one has been modified by adding a 2" barrel extension. The originals were 14". The pictures don't show the stock fully retracted, but you get the idea.
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=147402747 Also misidentified as WWII, they were made in 1950.
Is it an "Ideal survival rifle" as the title of the thread asks? Maybe, maybe not. It is, however, a historical artifact that was an attempt at that purpose. I think it's worthy of the discussion, so here you are.