Welcome to Librarium Online!
ok well i went to Conflict Calgary and went through the bits that were out for sale (OMG SO MANY!! I WAS IN HEAVEN) and picked up a few halberds with a bolter on the back side of the blade and an eagle head as a spike on the other end of the pole, as well as lots of other goodies.
now that i have a few of these and i'm starting to convert some termie sgts to use them instead of those puny swords they come with, i started wondering what model they were from and i can't for the life of me find it! if you know what i'm talking about please tell me!
They are probably Nemesis force halberds from the old Gray Knights.