| Modello | Peso operativo |
|---|---|
| RSC8EX | 6586.2 kg - 14520 libbre |
| RSC6EX | 4590.4 kg - 10120 libbre |
| RR4EX | 2805.5 kg - 6185 libbre |
| Gregory RSC7EX | 4889.7 kg - 10780 libbre |
| Gregory RSC5EX | 3991.6 kg - 8800 libbre |
| Gregory RSC4EX | 3253.2 kg - 7172 libbre |
| Gregory RSC3EX | 3002.8 kg - 6620 libbre |
| Gregory RS6EX | 2238.5 kg - 4935 libbre |
| Gregory RS5EX | 2243 kg - 4945 libbre |
| Gregory RS4EX | 2181.8 kg - 4810 libbre |
| Gregory RS3EX | 2102.4 kg - 4635 libbre |
| Gregory RR6EX | 2918.9 kg - 6435 libbre |
| Gregory RR5EX | 2918.9 kg - 6435 libbre |
| Gregory RR3EX | 2533.3 kg - 5585 libbre |
| Gregory RC4EX | 2635.4 kg - 5810 libbre |
| Gregory RC3EX | 2590 kg - 5710 libbre |