The Mossberg 183 is a .410 bore

.410 bore

.410 bore, commonly misnamed the .410 gauge, is the smallest gauge of shotgun shell commonly available. It has similar base dimensions to the .45 Colt revolver cartridge, though the .410 is significantly longer, up to , allowing many single-shot firearms and some revolvers chambered in that...

 bolt action shotgun, produced between 1947 and 1971 by O.F. Mossberg & Sons

O.F. Mossberg & Sons

O.F. Mossberg & Sons is an American firearms manufacturer, specializing in shotguns, rifles, scopes and firearm accessories. From the 1940s through the 1960s, it also produced a line of .22 caliber target and sporting rifles....

 in New Haven, Conn.

D

The original model produced from 1947-1948. It had a plain one-piece pistol grip stock. The gun was distributed with two choke tubes (modified and full), which mount by screwing to the outside of the barrel, as opposed to the inside, like the Remington 870

Remington 870

The Remington Model 870 is a U.S.-made pump-action shotgun manufactured by Remington Arms Company, Inc. It is widely used by the public for sport shooting, hunting, and self-defense. It is also commonly used by law enforcement and military organizations worldwide.-Development:The Remington 870 was...

or other modern shotguns. The shotgun was shipped with a wrench for removing the choke tubes.

K

The 183K is similar to the 183D, but had a "C-Lect-Choke", which allowed the shooter to vary the choke between four settings without changing adaptors (as with the 183D). Weight 5 1/2 lbs, barrel, 25" with variable C-Lect-Choke. Genuine walnut one piece Monte Carlo stock, later models walnut finish. Made 1953-1956.