Lithgow LA101 scope rail?

Ill update this just in case someone is lurking in the shadows,
Thinking (first mistake) if I use some of those Burris rings with the inserts I could get the 20ish MOA I am looking for. So I order some of the XTR ones.... don't they don't work. The factory scope mounts will not accept the pic rail bar on the bottom of the rings. Struck out on that one... back to looking for a rail...