Check out m9 bayonet tactical knife Low-poly 3D model on CGTrader for $8. High-quality mesh by afzaeian: 2815 polys, 2859 vertices. PBR, Textured, UV Mapped.
OBJ (OBJ, filesize: 159 KB), FBX (Autodesk FBX, filesize: 372 KB), MAX (Autodesk 3ds Max, filesize: 40.4 MB), 3DS (3D Studio, filesize: 741 KB)