The Marlin Model 55 is a large, bolt-action, series of shotguns.
It was produced in 20, 16, 12 and 10 gauge at various times in its production history.
[1] It features a full-choke and a thumb safety.
The shotgun shells are fed via a two-round, detachable, box magazine.
[2][3] This article relating to shotguns is a stub.