This metal miniature was called Space Marine in Mk6 Armour 3, part number 070106/42.
With some Horus Heresy Mark III arms/bolter:
Metal Space Marine in Mk6 Armour 3 Warhammer 40K
This metal miniature was called Space Marine in Mk6 Armour 3, part number 070106/42.
With some Horus Heresy Mark III arms/bolter: