|Place of origin||Soviet Union|
|Designer||Peter Andreevich Tkachev|
|Weight||2.0 kg (4.4 lb)|
|Length||655 mm (25.7 in) stock extended / 458 mm (18.0 in) stock folded|
|Barrel length||245 mm (9.7 in)|
|Rate of fire||700 rpm|
|Muzzle velocity||715 m/s|
|Maximum firing range||400 m|
|Feed system||15-round box magazine|
The AO-46 was a gas-operated 5.45×39mm caliber, compact carbine/assault rifle prototype. It features a folding stock and the trigger is located just in front of the magazine, which doubles as pistol grip. In order to minimize the length of the gun, gas for automatic operation was collected not out of the barrel, but directly from the flash suppressor in the muzzle. Despite having the latter feature, the combination of a relative powerful cartridge and short barrel produced a flash comparable to that of a sawed-off shotgun.
The weapon was an unsolicited design by Peter Andreevich Tkachev working at TsNIITochMash. Although not accepted for service, this design, in combination with report of the US use of the XM-177 in Vietnam let the GRAU to start the competition known as Project Modern, which led to the adoption of AKS-74U for service.
- Monetchikov, Sergei (2005). История русского автомата [The History of Russian Assault Rifle] (in Russian). St. Petersburg: Military Historical Museum of Artillery, Engineers and Signal Corps. p. 165. ISBN 5-98655-006-4.
- "Солдат удачи" номер 9 (72) 2000 Д.Ширяев "Кто изобрел автомат Калашникова?"
- AO-46 at weaponland.ru. Retrieved 2013-4-7
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