I received an email from MR stating that they changed the material for Qui-Gon's CE saber:
Meanwhile, in other Star Wars news, Master Replicas would like to officially announce that a major change has been made to the upcoming Qui-Gon Jinn Collectors Edition lightsaber. It was previously reported that the CE would feature a cast resin body; however, since that time, Master Replicas’ product development team has re-engineered the piece, and changed the resin to a more handsome, durable die cast metal. To purchase a Qui-Gon Jinn Collectors Edition lightsaber, please visit any of Master Replicas’ Authorized Retailers.
Interesting....I had my doubts about the resin holding up and was surprised that MR retooled the materials to die cast metal.