You'll never need more Dakka again. Shoulder mounted weapons for big ass walker, each requires front, mid and rear parts, plus 4 barrel prints, 2 ammo feeds and the correct handed mount. The ammo feeds are a little different than the thumbnail view as the originals would not print.
Should note that there is a remix burried somewhere under there, although I'm not sure how much of it shows anymore. Trying to find the original but if anybody can point me in the right direction so I can credit it that would be great.