[DarkSammy]

You have a couple options with the rails, but nitrostarter is right in saying finding new ones is not likely.

Depending on what thread you have stripped, you can look at doing one of 2 things:

1.) Use a longer bolt and fasten it with a nut
2.) Re-tap the stipped thread. If you search youtube for how to do this you should find the information you need to be able to go about it...

Hope this helps...

Sammy