Udar revolver

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UDAR (УДАР)
Type	Revolver
Place of origin	Russia
Service history
In service	MVD
Production history
Designer	KBP Instrument Design Bureau
Designed	1994
Manufacturer	KBP Instrument Design Bureau
Variants	Udar-S, Udar-TS
Specifications
Mass	920 g empty
Length	173 mm
Width	44 mm
Height	134 mm
Cartridge	12.3x50mmR (UDAR) 12.3x40mmR (UDAR-TS) 12.3x22mmR PM32 (UDAR-S) 9x18mm Makarov, 9x17mm Short (R-92)
Action	Double action
Effective firing range	5 m (Gas- or Liquid-Projection), 10 m (Plastic Baton), 25 m (Bullet)
Feed system	5-round cylinder

The U-94 UDAR (У-94 "Удар"; the Russian word udar means "Strike" or "Blow"^[1]) is a police weapon designed and developed by the KBP Instrument Design Bureau in the early 1990s and first manufactured in 1994.^[2][3] It is a compact double-action revolver that chambers proprietary ammunition in the form of an unusual 12.3mm (0.484" caliber, or 41-gauge)^[4] shell. It has a shrouded hammer that can be manually cocked or decocked by use of a cut-out slot at the top of the shroud. It has a side-breaking cylinder that opens to the left and uses a star-ejector to eject all the spent shells at once.