| AO-63 | |
|---|---|
| Type | Assault rifle |
| Place of origin | Soviet Union |
| Production history | |
| Designer | Sergei Simonov, Peter Tkachev |
| Designed | 1984 |
| Manufacturer | TsNIITochMash |
| Specifications | |
| Mass | 3.68 kg (8.1 lb) |
| Length | 890 mm (35.0 in) (Standard) 1,025 mm (40.4 in) (Extended stock) |
| Barrel length | 430 mm (16.9 in) |
| Cartridge | 5.45×39mm |
| Action | Gas-operated |
| Rate of fire | 850 rounds/min |
| Effective firing range | 850 m (930 yd) |
| Feed system | 45-round detachable box magazine |
| Sights | Iron sights, Picatinny rails for various optics |
The AO-63 (Автомат АО-63) is a Soviet two-barrel AK derived assault rifle chambered for the 5.45×39mm round. It was designed by Sergei Simonov and Peter Tkachev, and manufactured by TsNIITochMash. It uses a side-by-side barrel configuration, and it can reach a maximum rate of fire of 6000 rounds/min when fired in two-round burst mode with a 0.01 second delay to increase ballistic performance, making it technically the fastest-firing rifle known.