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Chapter 13
Chapter 13. Design
Chapter 13. History of the pistol

TKB-506

A special three-barreled
pistol. A prototype

Stechkin’s shooting
“cigarette case”
According to the terms of technical specifications, Stechkin’s unusual pistol was to fire the SP-2 special cartridge, developed at TsNIITOCHMASH (Klimovsk, Moscow Region) with the direct participation of the Tula designer. As noted in the reports, the shot noise generated by such a cartridge was similar to “the sound resulting from breaking a dry branch”, and neither flame nor sparks were observed when shooting in the dark.
The tests of the new pistol were carried out directly in the main building of the Committee for State Security (KGB) on Lubyanka Square.
According to Stechkin, he personally introduced a shooting "cigarette case" in the main building of the KGB, located on Lubyanka Square in Moscow. During identity checks, the officer on duty did not suspect that Stechkin had a weapon.
Caliber
7,62 mm
Dimensions
110х92х20 mm
Barrel length
25 mm
Weight
440 g
Muzzle velocity
165 m/s
To load the pistol:

- remove the firing device from the body,
- cock the firing pins,
- separate the bolt with firing pins from the barrel cluster,
- insert cartridges into the chambers,
- attach the barrel cluster to the bolt,
- put the firing device into the body.
Barrel cluster is a plate in which three cylindrical bores with chamber s are drilled under each other. It is housed in a steel casing shaped as a cigarette case.
Rail
Sear
Trigger with grip safety catch
Safety catch
The SP-2 cartridge bullet pierced a stack of three pine boards at 5 meters
Barrel cluster
Bolt
SP-2 cartridge
Rod
Main spring
SP-2 cartridge
There is an inscription on the inner surface of the top cover made by electrographic method: TKB-506, No. 10; No. 10 is embossed.
To fire a shot, you need to release the safety catch at the bottom of the pistol and simultaneously press the trigger and the grip safety. The sequence of shots begins with the lower barrel.
Mikhail Kalashnikov
Sergei Simonov
Vladimir Volkov
Evgeny Dragunov
Leonid Stepanov
Igor Stechkin
Russian designer Igor Yakovlevich Stechkin is the author of more than 100 development projects related to weapons and military equipment. One of his most famous inventions is an automatic pistol, adopted by the Soviet Army in 1951.

The multifaceted talent of the Tula gunsmith is also demonstrated by a unique cigarette-case pistol.
I.Ya. Stechkin’s biography
In 1955, by order of the USSR Main Rocket and Artillery Directorate, Tula designers began to develop a special-purpose weapon, which was to shoot silently and be invisible. It was supposed to be used by special service officers.

Stechkin proposed an original handgun, which in appearance and dimensions looked like a cigarette case.
To demonstrate the effectiveness and noiselessness of his invention, Stechkin fired three shots in a thick directory. All bullets pierced the book through, along with a hardcover. Members of the commission were outside the office door at that time and did not hear shots.
I.Ya. Stechkin himself told about this test:
A shooting cigarette case, as we called it, was fabricated. Big bosses appeared. I told and showed them everything. Our conversation focused on the extent to which the shot noise would be heard. Basically, the sound of a closed book. Like, if you slam a book like this. And I say: Let's try. One of the bosses takes out a file as thick as an annual calendar, puts on a chair and says: You’ll shoot at it, and we will stand in the corridor. They went out into the corridor. I loaded the pistol and shot three at the file. I hear them talking there and smoking. Then the door opens: When are you going to shoot? I say — I’ve already shot. They say we haven’t heard. I say —; here are the holes.
At present, it is unknown whether Stechkin’s special pistol was ever employed in practice.

Apparently, only a few prototypes of this weapon were made at Tula TsKIB COO.
A scout firing knife (NRS) and a special compact pistol (MSP) developed by Tula Arms Plant’s designers were later adopted by the Soviet Special Operations Forces.

But the unusual invention by I.Ya. Stechkin once again demonstrated the ability of the Tula gunsmiths to meet a challenging task assigned to them, and his pistol replenished the world collection of concealed weapons.