J. Stevens Arms Company (later Savage Arms)

The Stevens Model 520 is a pump-action shotgun manufactured by J. Stevens Arms Company in Chicopee Falls, Massachusetts. It was introduced in 1915 and remained in production for decades. The Model 520 uses a takedown design that allows the barrel to be removed for cleaning and storage. It features a hammerless receiver, a solid frame, and a tubular magazine. The 520 was available in 12, 16, and 20 gauge configurations.