Wanted: WTB: Holosun 507/508 or similar Pistol Optic

I’ve got a Shadow Systems (Glock ish) pistol that needs an optic. 
 

I am open to options so if you think I might like what you’ve got, let me know. But I’m mainly interested in a Holosun 507C and maybe a 508 instead. Let me know! 
 

located in ON but open to shipping as long as you can provide some credibility!