Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Weapon name | Caliber (mm) | Range (max) | Warhead |
| --- | --- | --- | --- |
| M-8 | 82 mm | 5,900 m (6,500 yd) | 0.64 kg (1.4 lb) |
| M-13 | 132 mm | 8,740 m (9,560 yd) | 4.9 kg (11 lb) |
| M-13DD | 132 mm | 11,800 m (12,900 yd) | 4.9 kg (11 lb) |
| M-13UK | 132 mm | 7,900 m (8,600 yd) | 4.9 kg (11 lb) |
| M-20 | 132 mm | 5,050 m (5,520 yd) | 18.4 kg (41 lb) |
| M-30 | 300 mm | 2,800 m (3,100 yd) | 28.9 kg (64 lb) |
| M-31 | 300 mm | 4,325 m (4,730 yd) | 28.9 kg (64 lb) |
| M-31UK | 300 mm | 4,000 m (4,400 yd) | 28.9 kg (64 lb) |
Question:
which three weapons have the highest caliber?
Answer:
M-30, M-31, M-31UK