The OC-01 Kobalt (russian: ОЦ-01 "Кобальт", "

Cobalt Cobalt is a chemical element with the symbol Co and atomic number 27. As with nickel, cobalt is found in the Earth's crust only in a chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, pr ...

") is a Russian double-action

9 mm 9 (nine) is the natural number following and preceding . Evolution of the Arabic digit In the beginning, various Indians wrote a digit 9 similar in shape to the modern closing question mark without the bottom dot. The Kshatrapa, Andhra and ...

revolver designed by

Igor Stechkin Igor Yakovlevich Stechkin (Russian: Игорь Яковлевич Стечкин; 15 November 1922 – 28 November 2001) was a Russian small arms designer. __NOTOC__ Designs *Stechkin automatic pistol, 9mm machine pistol *TKB-506, prototype han ...

and Boris Avraamov.Револьвер ОЦ-01 "Кобальт" // Виктор Шунков. Боевое и служебное оружие России. М., ООО "Издательство ЭКСМО", 2012. стр.31-32 The revolver was developed by CKIB SOO from 1991 to 1992 and was meant for sale to the

Ministry of Internal Affairs An interior ministry (sometimes called a ministry of internal affairs or ministry of home affairs) is a government department that is responsible for internal affairs. Lists of current ministries of internal affairs Named "ministry" * Ministry ...

and to

law enforcement Law enforcement is the activity of some members of government who act in an organized manner to enforce the law by discovering, deterring, rehabilitating, or punishing people who violate the rules and norms governing that society. The term en ...

. In 1992 it was adopted by Ministry of the Interior of the Russian Federation as service weapon under designation RSA (''Revolver Stechkina-Avraamova''). Since 1994 it was also manufactured by "

Zlatoust Machine-Building Plant The JSC Zlatoust Machine-Building Plant (ZlatMash) is an arms manufacturing plant in Zlatoust, Chelyabinsk Oblast, Russia. It produced many of the Soviet Union's nuclear weapons, including the R-39 Submarine-launched ballistic missile. The pla ...

" and "Uralsk Machine-Building Plant" under designation TKB-0216 (''ТКБ-0216'').

Description

The revolver resembles a Smith & Wesson "J"-frame revolver, with its small frame, "bird's head" grip and an external hammer. There is a safety on the left-hand side of the gripdead link
/ref> that locks the cylinder and hammer to prevent it from accidental discharge. Since it fires rimless cartridges, the six-shot revolver is cut for "

moon clip A moon clip is a ring-shaped or star-shaped piece of metal designed to hold multiple cartridges together as a unit, for simultaneous insertion and extraction from a revolver cylinder. Moon clips may either hold an entire cylinder's worth of cartri ...

s", sheet-metal holders that grasp the rounds by the base to allow them to be extracted easily. The revolver uses a special Y-shaped "moon clip" that loads alternate chambers and locks into the other "moon clip". This allows alternating types of ammunition (like hollow point or armor-piercing) to be loaded into the same cylinder and allows the user to reload a special type of ammunition and keep the other type in reserve. It can also be used without the "moon clips", but the spent cases would not be extractable unless pushed out from the front of the cylinder with a rod-like object, like a pen or pencil.

Variants

* RSA (''Револьвер Стечкина-Авраамова'') - model chambered for

9×18mm Makarov The 9×18mm Makarov (designated 9mm Makarov by the C.I.P. and often called 9×18mm PM) is a Soviet pistol and submachine gun cartridge. During the latter half of the 20th century it was a standard military pistol cartridge of the Soviet Union an ...

. It was manufactured from 1992 until 2002. :* OTs-01 (''OЦ-01 "Кобальт"'') - original variant chambered for

. The revolver was manufactured in

Tula Tula may refer to: Geography Antarctica *Tula Mountains *Tula Point India *Tulā, a solar month in the traditional Indian calendar Iran * Tula, Iran, a village in Hormozgan Province Italy * Tula, Sardinia, municipality (''comune'') in the pr ...

by its parent company KBP. This early model has

polygonal rifling Polygonal rifling ( ) is a type of gun barrel rifling where the traditional sharp-edged "lands and grooves" are replaced by less pronounced "hills and valleys", so the barrel bore has a polygonal (usually hexagonal or octagonal) cross-sectional p ...

. :* TKB-0216 (''ТКБ-0216'') - second variant chambered for

. This model was manufactured since 1994 by "

" and "Uralsk Machine-Building Plant". The

rifling In firearms, rifling is machining helical grooves into the internal (bore) surface of a gun's barrel for the purpose of exerting torque and thus imparting a spin to a projectile around its longitudinal axis during shooting to stabilize the pro ...

twist of this variant barrel has 4 grooves, right hand twist. * OTs-01S (''ОЦ-01С'') - variant chambered for 9x17 mm Short. It was designed as a sidearm for private security or a holdout or backup pistol for bodyguards or VIPs that require concealed firepower. It was produced since 1996. * TKB-0216T «Agent» (''ТКБ-0216Т «Агент»'') -

non-lethal Non-lethal weapons, also called nonlethal weapons, less-lethal weapons, less-than-lethal weapons, non-deadly weapons, compliance weapons, or pain-inducing weapons are weapons intended to be less likely to kill a living target than conventional ...

revolver chambered for .380 ME GUM cartridge with

rubber bullet Rubber bullets (also called rubber baton rounds) are a type of baton round. Despite the name, rubber bullets typically have either a metal core with a rubber coating, or are a homogeneous admixture with rubber being a minority component. Altho ...

. This model manufactured by "

Users

* - prison guards, security guards of Ministry of Agriculture of the Russian Federation and law enforcement * - since 2005 adopted as service firearm for custom serviceПостановление Правительства Республики Казахстан № 1014 от 2 октября 2010 года "Об утверждении категорий должностных лиц таможенных органов, наделенных правом ношения, хранения огнестрельного оружия и пользования им, перечней специальных средств и видов огнестрельного оружия и боеприпасов, применяемых должностными лицами таможенных органов"

References

Sources

* 9-мм револьвер ОЦ-01 (ТКБ-0216). Паспорт ОЦ-01 ПС * 9-мм револьвер РСА. Техническое описание и инструкция по эксплуатации ТКБ-0216ТО - 1992 г.

External links