Sternguard Devastator with Grenade Launcher

Sternguard with Grenade Launcher. Another weapon "borrowed" from the Imperial Guard, Grenade Launchers have been used by the Harriers from some time. The versatility of the ammunition is a major advantage with rounds available for almost any purpose. Proximity rounds allow for minefields to be set up quickly, acid fog rounds prevent pursuit after ambushes and lightening raids and fragmentation mortar rounds easily pacify open trenches.

The grenade launcher is, obviously, from an Imperial Guard kit. The helmet is a Mk 4 I believe but I can't remember where from. The grenade bandolier on his shoulder came from a scout bike.