Below are the best Holosun Red & Green Dot optics at the best price with free shipping that you can mount on your FN 509, 510, or 545 Optics Ready model.

To learn more about each read our FN 509/510/545 Optics Fitment Guide here.

To mount the RMR footprint optics you will use the plate system and screws that comes with your FN 509, 510, or 545. 

To mount the modified RMSc footprint optics you will need this Holosun FN 509/510/545 to 407K, 507K, EPS, EPS Carry Adapter plate.

These are for the FN 509 Tactical BLK, FN 509 Tactical FDE, FN 509 Midsize MRD BLK, FN 509 Midsize MRD FDE, FN 509 Compact MRD BLK, FN 509 Compact MRD FDE, FN 509 Compact Tactical BLK, FN 509 Compact Tatcial FDE, FN 509 Midsize Tactical FDE, FN 509 Midsize Tactical BLK, FN 509 LS Edge, FN 509 CC Edge, FN 510 Tactical, FN 545 Tactical

If you have any other questions reach out to us on chat.