Check out Steel Stained M4 Bolt Allen Cap with PBR 4K Textures 3D model on CGTrader for $5. High-quality mesh by Doranciphu: 3113 polys, 3071 vertices. PBR, Textured, UV Mapped.
FBX (Autodesk FBX, filesize: 306 KB), BLEND (Blender, filesize: 221 KB), TEXTURES (Textures, filesize: 23 MB), OBJ (OBJ, filesize: 82.8 KB), GLTF (glTF, filesize: 26.3 MB), PNG (PNG, filesize: 23 MB), 3DS (3D Studio, filesize: 32.6 KB), OTHER (Other, filesize: 34.7 MB), ABC (Alembic, filesize: 71.7 KB), DAE (Collada, filesize: 7.93 MB), DXF (DXF, filesize: 128 KB), PLY (Ply, filesize: 28.3 KB), STL (Stereolithography, filesize: 69.1 KB)