I picked up a box of the Wargames Factory Shock Troops to build
some great coated Guardsmen to use as regular troops alongside of my Vostroyan Veterans. I built and painted up two models as a test and I think they The WGF bodies combined with GW arms and the Pig Iron Winter Militia heads make for some nice unique looking models.
Since I used GW arms for these guys, I have plenty of the guns that came with the shock troops left over. Obviously these would make great looking shotguns, but I've also been looking for a modeling solution for a hot-shot lasgun -- by combining the shotgun with the muzzle piece of the Catachan lasgun I now have pretty heavy-duty looking lasgun.