can you put them on XD45's?
Yes. I had Trijicons on my XD. I think it is the same sight as the Sig.... Just google "Trijicon XD".
You find a dozen sources.
Can, and should.
yea i like the trijicons i had to buy my glock with std sights now that i kno you can get em for XD'S they will both get them!