Just spotted this in my google reader.
Basically its a Space Marine Dreadnought with double autocannons. I'm guessing it's name comes from the Battletech RFL-3C Rifleman (itself based on the Macross defender)
Now after a quick search around the web I have realised that this is quite a popular modelling choice for Dreadnoughts however I have never felt so inspired by a model.
Funds permitting I am hoping to get add one to my Blood Angels soon (hey I realise its a Dark Angels only model but I just love the look of it). Maybe this is the time to throw some cash Forgeworlds way.
Brother Raidar will get to fight for the Imperium again