|Place of origin||Soviet Union|
|Weight||0.44 Kg (0.47 with ammo)|
|Barrel length||2.5 cm|
|Caliber||7.62 mm SP-2|
|Muzzle velocity||170 m/s|
The dimensions of TKB-506 are 11 x 9.2 x 2 cm. Weighting 0.44Kg empty, it could fire three 7.62 mm rounds, each held in a separate barrel only 2.5 cm long and each having a separate striker. Device number 10 can now be seen at the Tula arms museum.
TKB-506A had an identical armament, and similar weight of around 0.47 Kg with ammo, but was even smaller (7.4 cm height) by doing away with the cut-through hole used for the trigger in TKB-506.
The gun was co-developed together with the first generation Soviet silent ammunition SP-1, which did not see production, and SP-2, which proved practical enough. The principle of operation was to use a piston-type cartridge, which did not allow the burnt gases to escape it.
The safety mechanism of Glock-17 and GSh-18 pistols was first implemented in TKB-506A by, but Stretchkin who did not consider it important and did not apply for a patent.
- http://www.pseudology.org/people/StechkinIY.htm (Russian)
- Оружие И.Я. Стечкина, Официальный сайт Тульского государственного музея оружия, retrieved 2013-4-7
- Игорь Яковлевич Стечкин и его легендарное оружие, pravda-tv.ru, 16.11.2012, retrieved 2013-5-7
- Maxim Popenker (2008), Special purpose small arms ammunition of USSR and Russia; updated version of an article first appeared in the March 2005 issue of The Cartridge Researcher, the Journal of ECRA (the European Cartridge Research Association)
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