Gunpowder Storage Buildings Low-poly 3D model is available on CGTrader for $8. Original author: viktor-bublic.
STL (Stereolithography, filesize: 108 KB), OBJ (OBJ, filesize: 96.2 KB), 3DS (3D Studio, filesize: 58.5 KB), DAE (Collada, filesize: 143 KB), FBX (Autodesk FBX, filesize: 120 KB), IGE (IGES, filesize: 299 Bytes), MAX (Autodesk 3ds Max, filesize: 72.6 KB), SKP (Sketchup, filesize: 273 KB), OTHER (Other, filesize: 24.5 KB)