| Model | AM 640 |
| Caliber | 40 mm |
| Barrel Length | 253 mm (10") |
| Drum Cylinder Length | 127 mm (5") |
| Total Length (Stock Extended) | 807 mm (31,7") |
| Total Length (Stock Collapsed) | 730 mm (28,7") |
| Total Length (Without Stock) | 543 mm (21,3") |
| Weight (empty) | 5500 gr |
| Dimension of launcher | L:805mm max H:238mm W:143 mm |
| Mode of Fire | Pump-action |
| Muzzle Velocity | LV 75 m/s & MV 100 m/s (±5m/s) |
| Ammunition Feeding | Revolver |
| Cylinder capacity | 6 rounds |
| Effective Range (max) | MV grenades 800 m LV grenades 400.m |
| Trigger pull FORCE | 4.5-6 Kg (45-60 Newton) |
| Trigger | Double-action Trigger |
| Barrel life span | 5000 rounds |
| Barrel Profile | 6 Groves RH |
| Shooting Pattern | Into 10 m diameter at 200 m |
| Type of Ammunition | 40x46 mm Low Velocity (LV) & 40/51 mm Medium Velocity (MV) less than 140 mm and 40X 53 mm |