Is there a such thing as a "Digital Camera LSR"?

If so please let me know where I can buy one thanks

You are going to have to explain to us what a Digital Camera LSR is ... Maybe.

If you mean DSLR, then of course, they have been around for years. Kodak first made them for Nikon lenses in 1998.
Now Nikon and Canon make them for their own lens line. There are other companies making them, but Nikon and Canon are what the pros use.