| AO-27 | |
| Origin: | Soviet Union |
| Type: | Assault rifle |
| Is Ranged: | YES |
| Designer: | Dmitry Ivanovich Shiryayev |
| Design Date: | 1961 |
| Weight: | 3.2 kg (without rounds) |
| Length: | 893 mm |
| Part Length: | 415 mm |
| Caliber: | 7.62 mm (3 mm flechette) |
| Rate: | 700 rounds/min |
| Velocity: | 1060 m/s |
| Feed: | 30-round detachable box magazine |
| Sights: | Iron sights |
The AO-27 was a Soviet assault rifle, chambered for the 7.62 mm fin-stabilized flechette sabot round. The flechette itself had a body diameter of 3 mm. The overall length of the round was 63 mm, and the flechette 55 mm. The weight of the round was 10.5 grams, with 2.4 grams the weight of the flechette.