Another rare rifle for Royal Armouries to discuss in this episode, the Colt AR-15 Survival Rifle... "Designed to provide US aircrews with enough punch to defend themselves in a pinch and potentially survive behind enemy lines, the CAR-15 had all the hallmarks of a successful design.

But the project was shelved and this example is 1 of only 10 to survive, entering the museum collection under some mystery, as Jonathan explains."