Check out Bowie Knives - Military Knife Low-poly 3D model on CGTrader for $4.99. High-quality mesh by b-CG: 2720 polys, 2514 vertices. PBR, Textured, UV Mapped.
FBX (Autodesk FBX, filesize: 59 MB), TEXTURES (Textures, filesize: 58.2 MB), JPG (JPG, filesize: 58.2 MB), PNG (PNG, filesize: 58.2 MB)