The Savage Model 24 is an over/under combo gun. It’s a 22LR rifle barrel over top a 410 shotgun barrel, though some other similar variants like the 24V were available in heavier-duty centerfire rifle and larger shotgun gauges. They stopped making them in 2010, but released the Model 42 as its successor with polymer stocks. They’re setup as a small game getter: go 22LR to the head for maximum meat or 410 for fast take downs of small game animals on the move (or on the wing)

22LR over 3″ .410 (early models were a fixed full choke)
    Break-open action with manual hammer and barrel selector
    Extractors (no auto-ejectors)
    7lbs
    Basic post & notch iron sights