| # | Part Number | Description |
| 1 | FRQ-2502 | SW BASE ENG |
| 2 | FRQ-2551-US | SW PLATE W/Square Hole |
101 | FRQ-2552-US | Switch Trigger W/Wire USA |
| 102 | FRQ5-2552 | FOP SW Trigger Wired W/Plate (Contains FRQ-2551-US and FRQ-2552-US) |