TOZ-55

The TOZ-55 "Zubr" is a Soviet over-and-under hammerless combination gun built for hunting large game. It was designed by N. I. Korovyakov in the early 1970s, based on his earlier TOZ-34 shotgun. The first examples were produced in 1975 at the Tula Arms Plant.

The gun came with three sets of detachable chrome-plated barrels: a pair of 9mm rifled barrels (600mm), a pair of 12/70mm smoothbore barrels (675mm), and a combination set with a 9mm rifled barrel over a 12-gauge smoothbore barrel. All models had iron sights and a scope base. Standard optical sights included the PO-4×34, TO-6P, and TO-6PM, though custom scopes also exist. The stock and fore-end were walnut, and some guns were engraved.

In April 1987, the Tula Arms Plant announced that the new TOZ-84 would replace the TOZ-34, TOZ-55, and TOZ-57 in production, and the TOZ-55 was discontinued. Despite this, by December 1988 it remained the most common hunting firearm in the Soviet Union chambered in 9×53mmR. After the Soviet collapse, unfinished TOZ-55 guns and spare parts remained at the plant. A simplified version, the TOZ-55-2 "Zubr," was planned for the 1990s, but production of 9×53mmR ammunition stopped in 1992 due to Russia’s economic crisis, and Tula chose to continue making the TOZ-34 instead.

Two other variants existed: the TOZ-55-3 "Zubr," a simplified version with only a pair of 12-gauge smoothbore barrels, and the TOZ-56, a test prototype with a 9mm rifled barrel over a smoothbore barrel. The TOZ-55 was used by the USSR, Latvia, the Russian Federation, and was imported into the United States.