A-91

A-91
5.56×45mm NATO variant of the A-91
TypeBullpup Assault rifle
Place of originSoviet Union
Service history
In service1990–present
Used byRussian Police, Military Services
Production history
DesignerKBP Instrument Design Bureau
Designed1990
ManufacturerKBP Instrument Design Bureau
Produced1991
Variants5,56 A-91, A-91M
Specifications
Mass4.3 kg (9.48 lb) (A-91 without the grenade launcher)
4.4 kg (9.70 lb) (5,56A-91 with the grenade launcher)
Length660 mm (26.0 in)
670 mm (26.4 in) (5,56A-91)
Barrel length415 mm (16.3 in)
Width56 mm (2.2 in)
64 mm (2.5 in) (5,56А-91)
Height291 mm (11.5 in)
292 mm (11.5 in) (5,56A-91)

Cartridge7.62×39mm
5.45×39mm
5.56×45mm NATO (5,56A-91)
40 mm caseless (grenade launcher)
Caliber7.62×39mm, 5.45×39mm, 5.56×45mm NATO
ActionGas-operated, rotating bolt
Rate of fire600–800 rounds/min
700 rounds/min (5,56A-91)
Muzzle velocity715 (А-91), 910 (5,56А-91)
Effective firing range300 m
300 m (5,56A-91)
400 m (grenade launcher)
Feed system30-round detachable box magazine
SightsDioptric sight, Grenade launcher sight

The A-91 is a Russian bullpup assault rifle developed by the KBP Instrument Design Bureau during the 1990s. It is an evolution of the earlier 9A-91 carbine, primarily designed to be compact, reliable, and versatile in urban combat scenarios. The rifle is notable for its integrated 40mm grenade launcher and the use of a bullpup configuration, which positions the magazine behind the trigger, allowing for a more compact design without sacrificing barrel length.