The Marlin Golden 39A represents the oldest and longest continuously produced shoulder firearm

Firearm

A firearm is a weapon that launches one, or many, projectile at high velocity through confined burning of a propellant. This subsonic burning process is technically known as deflagration, as opposed to supersonic combustion known as a detonation. In older firearms, the propellant was typically...

 in the world. The lever-action

Lever-action

Lever-action is a type of firearm action which uses a lever located around the trigger guard area, to load fresh cartridges into the chamber of the barrel when the lever is worked. Most lever-action firearms are rifles, but lever-action shotguns and a few pistols have also been made...

 .22 Caliber Golden 39A is produced by the Marlin Firearms

Marlin Firearms

Marlin Firearms Co., formerly of North Haven, Connecticut, is a manufacturer of high power, center fire, lever action, and .22 caliber rimfire rifles. In the past, the company made shotguns, derringers and revolvers...

 Co. of North Haven, Connecticut

North Haven, Connecticut

North Haven is a town in New Haven County, Connecticut on the outskirts of New Haven, Connecticut.North Haven is less than ten miles from downtown New Haven and Yale University. It is near Sleeping Giant State Park and home the Quinnipiac University School of Health Sciences, the School of Nursing,...

. The Golden 39A is also constructed in Marlin's factory in New Haven.
The Golden Model 39A started life as the Marlin Model 1891, the first lever action rifle ever chambered in .22LR

.22 Long Rifle

The .22 Long Rifle rimfire cartridge is a long established variety of ammunition, and in terms of units sold is still by far the most common in the world today. The cartridge is often referred to simply as .22 LR and various rifles, pistols, revolvers, and even some smoothbore shotguns have...

 and the magazine was loaded through a conventional side gate in the receiver.