A short side rail that allows installation of additional equipment on the side of the MP9 SMG. Manufactured by Brügger & Thomet.
| Mechanic | ₽850 |
| Flea Market | ₽12,000 |
| Flea Market | ₽12,000 |
| Jaeger | ₽510 |
| Mechanic | ₽476 |
| Prapor | ₽425 |
| Ref | ₽425 |
| Skier | ₽416 |
| Fence | ₽255 |
| Peacekeeper | $3 |