Warhammer 40k 40,000 Space Marines Command Squad

I can't find this particular set on the Games workshop website but I'll do my best to identify the figurines I do have.

These figures are unused and unpainted, they have been glued to bases and some are partially assembled. the box is a little beat up it's been bumping around my closet for many years. The only piece that appears to be missing is the commander's arm so I must sell this AS-IS I cannot guarantee that everything from the original set is there. (there may even be one figure missing) What you see is what you get.

The pieces I can identify are: A Techmarine with power axe, A Space Marine Commander, An Apothecary with a chainsword and narthecium. Not sure about the other figure with the boltgun pointing with his right hand.