Of course with the Grey Knights being an elite codex this is probably 2,000 points worth.  An old, early mark of terminator armor.  Storm bolter and power fist.  Hope it fits, cool model.  A GK librarian with force sword, a GK terminator with psycannon and force sword, 3 skull servitors, and 10 acolytes.  And the acolytes have Oni masks to scare off daemons.  Appropriate huh.