The BL Touch Probe is compatible with:

• Ultra-One printers
• M3 series Rev 1 printers
• Probe Upgrade Kit (for M3-ID Rev 0 printers only)

Just need the probe tip and not the whole assembly? You can order just the  BL Touch Probe Tip.

BLTouch 3D Printed Spacer- M3/BLTouch Spacer.STL at master · MakerGear/M3 · GitHub