The BIG thing you get with the RUM is a massive upgrade path. If it fits a Rem700 it pretty much fits a RUM too. There even 45cal RemAge barrels available that can be installed with simple tools. They are pretty pricey though for that one. CF RemAge barrels fit also and cost way less.

Try to find just a aftermarket trigger for a Knight. Nothing is supported by aftermarket like a Rem700 platform. Not even close.