Check out German Trench Knife - Game Ready PBR Historically Accurate Low-poly 3D model on CGTrader for $8. High-quality mesh by ElPedrino: 1428 polys, 1420 vertices. PBR, Textured, UV Mapped.
BLEND (Blender, filesize: 838 KB), OBJ (OBJ, filesize: 190 KB), FBX (Autodesk FBX, filesize: 103 KB), PNG (PNG, filesize: 278 MB)