Oh um ok, my bad. Thank for all the help and the explanation; I'll be picking up an extender for which ever laser I end up going with.
I should have added, yes a BE and a Telescope are essentially the same thing. Minimum two optics - although you could use more if you wanted to perform additional correction on the beam.
This page on Edmund's website does a great job of explaining how beam expanders and telescopes work. Link-->> Beam Expanders
The jist of it is that a BE is a Telescope used in reverse.