Westar question

Hi guys, so I've been looking around to see about getting started with a pair of westars, I've checked out a couple of threads but i don't know what some of the models people are talking about. can someone explain what MR and Rubies blasters are? and how to make/get them?

MR= Master Replicas = really good and about 400 dollars

Rubies are plastic and run about 15 dollars for the pair

Then there are resin cast and individual made Westars that are in between the two. The WOF templates for the westars are in a sticky at the top of the Jango forum if you are interested in making them yourself