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5.56×45mm NATO variant of the A-91
Type Bullpup Assault rifle
Place of origin Russia
Service history
In service 1990–present
Used by Russian Police, Military Services[citation needed]
Production history
Designer KBP Instrument Design Bureau
Designed 1990
Manufacturer KBP Instrument Design Bureau
Produced 1991
Variants 5,56 A-91, A-91M
Weight 4.3 kg (9.48 lb) (A-91 with the grenade launcher)
4.4 kg (9.70 lb) (5,56A-91 with the grenade launcher)
Length 660 mm (26.0 in)
670 mm (26.4 in) (5,56A-91)
Barrel length 415 mm (16.3 in)
Width 56 mm (2.2 in)
64 mm (2.5 in) (5,56А-91)
Height 291 mm (11.5 in)
292 mm (11.5 in) (5,56A-91)

Cartridge 7.62×39mm
5.56×45mm NATO (5,56A-91)
VOG-25 (grenade launcher)
Caliber 7.62×39mm, 5.45×39mm, 5.56×45mm NATO
Action Gas-operated, rotating bolt
Rate of fire 600–800 rounds/min
700 rounds/min (5,56A-91)
Muzzle velocity 715 (А-91), 910 (5,56А-91)
Effective firing range 300 m
300 m (5,56A-91)
400 m (grenade launcher)
Feed system 30-round detachable box magazine
Sights Dioptric sight, Grenade launcher sight

The A-91 bullpup assault rifle (also known as A-91M) was developed during the 1990s by KBP Instrument Design Bureau in Tula, as an offspring of the A-91 family of compact assault rifles described in the 9A-91 article. While the A-91 retains the basic gas-operated, rotating bolt action and a trigger unit design from 9A-91, it features a bullpup polymer housing, with an integral 40 mm single-shot grenade launcher mounted under the barrel. The earliest prototypes of the A-91 bullpup were fitted with the grenade launcher above the barrel, and with a front vertical foregrip; current models are fitted with the underbarrel launcher, which also serves as a forearm. The A-91 features a forward ejection system, initially developed in Tula by designers like Afanasiev during the early 1960s. In this system, the ejection port is located above the pistol grip, and points forward. Extracted cases are fed from bolt head through the short ejection tube to the ejection port, and fall out of the gun well clear of the shooter's face, even when firing from the left shoulder. As for now, the A-91 is made in small number and, probably, is used by some elite law enforcement units in Russia; it is also offered for export and domestic military and police sales.


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