The GSh-18 (Cyrillic: ГШ-18) is a 9mm semi-automatic pistol developed by the KBP Instrument Design Bureau in Tula during the 1990s.

[4] It was only in 2003 that the pistol was widely adopted under Decree of the Government of the Russian Federation No.

[4] The GSh-18 is a rotating-barrel, short recoil, locked-breech pistol with 10 locking lugs spaced equally around the barrel, the large locking surface area resulting in a strong lockup,[5] making it suitable for high-velocity ammunition loads.

[1] The slide and working parts are steel, and the weapon has a polymer frame.

The magazine release is reversible for left-handed shooters and the extractor doubles as a loaded chamber indicator.