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[citation needed]
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 bullpup assault rifle developed during the 1990s by KBP Instrument Design Bureau in Tula, Soviet Union as an offspring of the 9A-91 firearm family.

A-91
A-91
TypeBullpup assault rifle, grenade launcher
Place of origin Russia
Service history
In service1990s–present
Used by RussiaRussian Armed Forces
Production history
DesignerKBP Instrument Design Bureau
Designed1990s
ManufacturerKBP Instrument Design Bureau
Produced1990s–present
Specifications
Mass3.82 kg (8.42 lb)
Length660 mm (26 in)
Barrel length415 mm (16 in)

Cartridge5.45×39mm, 7.62×39mm, 5.56×45mm NATO
ActionGas-operated, short-stroke piston, rotating bolt
Rate of fire600 rounds/min
Muzzle velocity880 m/s (2,887 ft/s)
Effective firing range500 m (550 yd)
Feed system30-round detachable magazine
SightsAdjustable iron sights, compatible with various optics

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.