Sig p320 x5 legion red dot options

Any good recommendations for the legion was looking at some but need the adapter plate any good budget friendly recommendations that are direct bolt on 250$ or less I’ll even consider the plate if it’s a good sight bought Holosun 407a3 but will just put on my g23

Any good recommendations for the legion was looking at some but need the adapter plate any good budget friendly recommendations that are direct bolt on 250$ or less I’ll even consider the plate if it’s a good sight bought Holosun 407a3 but will just put on my g23