I received a pre-release that was not really designed for the Pro and probably for another Uzi model by IMI. Either way the mount is solid but mine in particular was not perfect. I already knew that before it was sent so I cannot complain about it. It was a simple fix of shaving off some material till my Uzi Pro fit. I am sure the new and improved one that Spartan Mounts sells is a perfect fit and maybe one day I will replace my modified version with a proper version but until then I will use this. Either way hope this helps someone out!